diff --git a/clients/imodelhub/package.json b/clients/imodelhub/package.json
index fba80043004a..798e58c4c5aa 100644
--- a/clients/imodelhub/package.json
+++ b/clients/imodelhub/package.json
@@ -74,7 +74,7 @@
     "chai": "^4.1.2",
     "eslint": "^7.11.0",
     "fs-extra": "^8.1.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nock": "^12.0.3",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
diff --git a/common/changes/@bentley/imodelbank-client/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@bentley/imodelbank-client/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..8fb72e1c0b44
--- /dev/null
+++ b/common/changes/@bentley/imodelbank-client/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@bentley/imodelbank-client",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@bentley/imodelbank-client"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/analytical-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/analytical-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..a9106e068378
--- /dev/null
+++ b/common/changes/@itwin/analytical-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/analytical-backend",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/analytical-backend"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/appui-abstract/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/appui-abstract/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..df7b69c28efe
--- /dev/null
+++ b/common/changes/@itwin/appui-abstract/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/appui-abstract",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/appui-abstract"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/appui-layout-react/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/appui-layout-react/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..200d5549522c
--- /dev/null
+++ b/common/changes/@itwin/appui-layout-react/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/appui-layout-react",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/appui-layout-react"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/appui-react/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/appui-react/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..d1602ba3d8d3
--- /dev/null
+++ b/common/changes/@itwin/appui-react/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/appui-react",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/appui-react"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/build-tools/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/build-tools/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..bcb0698bda38
--- /dev/null
+++ b/common/changes/@itwin/build-tools/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/build-tools",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/build-tools"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/certa/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/certa/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..8a091cb1a817
--- /dev/null
+++ b/common/changes/@itwin/certa/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/certa",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/certa"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/components-react/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/components-react/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..0f416281e969
--- /dev/null
+++ b/common/changes/@itwin/components-react/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/components-react",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/components-react"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..a9c4cedc51b5
--- /dev/null
+++ b/common/changes/@itwin/core-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-backend",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-backend"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-bentley/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-bentley/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..54bf83ebe6aa
--- /dev/null
+++ b/common/changes/@itwin/core-bentley/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-bentley",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-bentley"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-common/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-common/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..1a78a9fbd5a0
--- /dev/null
+++ b/common/changes/@itwin/core-common/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-common",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-common"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-frontend/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-frontend/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..230bd9d48093
--- /dev/null
+++ b/common/changes/@itwin/core-frontend/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-frontend",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-frontend"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-geometry/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-geometry/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..d570519bde80
--- /dev/null
+++ b/common/changes/@itwin/core-geometry/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-geometry",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-geometry"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-markup/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-markup/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..82450c4d9932
--- /dev/null
+++ b/common/changes/@itwin/core-markup/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-markup",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-markup"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-mobile/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-mobile/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..a0f896dfdecf
--- /dev/null
+++ b/common/changes/@itwin/core-mobile/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-mobile",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-mobile"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-orbitgt/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-orbitgt/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..78d7a59e1a1a
--- /dev/null
+++ b/common/changes/@itwin/core-orbitgt/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-orbitgt",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-orbitgt"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-quantity/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-quantity/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..dd09af381e0d
--- /dev/null
+++ b/common/changes/@itwin/core-quantity/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-quantity",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-quantity"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-react/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-react/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..71b8a2673258
--- /dev/null
+++ b/common/changes/@itwin/core-react/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-react",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-react"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-telemetry/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-telemetry/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..012b18e9dc79
--- /dev/null
+++ b/common/changes/@itwin/core-telemetry/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-telemetry",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-telemetry"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-transformer/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-transformer/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..b4fb37cf4976
--- /dev/null
+++ b/common/changes/@itwin/core-transformer/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-transformer",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-transformer"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/core-webpack-tools/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/core-webpack-tools/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..96ee24e035e1
--- /dev/null
+++ b/common/changes/@itwin/core-webpack-tools/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-webpack-tools",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-webpack-tools"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/ecschema-editing/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/ecschema-editing/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..7c8051378859
--- /dev/null
+++ b/common/changes/@itwin/ecschema-editing/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/ecschema-editing",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/ecschema-editing"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/ecschema-locaters/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/ecschema-locaters/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..09c3b8d8fd67
--- /dev/null
+++ b/common/changes/@itwin/ecschema-locaters/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/ecschema-locaters",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/ecschema-locaters"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/ecschema-metadata/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/ecschema-metadata/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..6964c32ab379
--- /dev/null
+++ b/common/changes/@itwin/ecschema-metadata/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/ecschema-metadata",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/ecschema-metadata"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/ecschema-rpcinterface-tests/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/ecschema-rpcinterface-tests/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..1a47f0db938f
--- /dev/null
+++ b/common/changes/@itwin/ecschema-rpcinterface-tests/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/ecschema-rpcinterface-tests",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/ecschema-rpcinterface-tests"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/ecschema2ts/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/ecschema2ts/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..d5644ee871eb
--- /dev/null
+++ b/common/changes/@itwin/ecschema2ts/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/ecschema2ts",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/ecschema2ts"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/editor-common/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/editor-common/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..29bb1b5ab93b
--- /dev/null
+++ b/common/changes/@itwin/editor-common/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/editor-common",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/editor-common"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/eslint-plugin/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/eslint-plugin/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..665c8465b2c7
--- /dev/null
+++ b/common/changes/@itwin/eslint-plugin/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/eslint-plugin",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/eslint-plugin"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/express-server/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/express-server/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..eb0177ca1358
--- /dev/null
+++ b/common/changes/@itwin/express-server/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/express-server",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/express-server"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/hypermodeling-frontend/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/hypermodeling-frontend/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..c9fb761a9189
--- /dev/null
+++ b/common/changes/@itwin/hypermodeling-frontend/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/hypermodeling-frontend",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/hypermodeling-frontend"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/imodel-components-react/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/imodel-components-react/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..5a246ed2bf5d
--- /dev/null
+++ b/common/changes/@itwin/imodel-components-react/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/imodel-components-react",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/imodel-components-react"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/linear-referencing-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/linear-referencing-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..d50a40a0b398
--- /dev/null
+++ b/common/changes/@itwin/linear-referencing-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/linear-referencing-backend",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/linear-referencing-backend"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/linear-referencing-common/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/linear-referencing-common/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..5432def324f2
--- /dev/null
+++ b/common/changes/@itwin/linear-referencing-common/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/linear-referencing-common",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/linear-referencing-common"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/map-layers-auth/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/map-layers-auth/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..697e4056ca74
--- /dev/null
+++ b/common/changes/@itwin/map-layers-auth/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/map-layers-auth",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/map-layers-auth"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/map-layers/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/map-layers/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..78ec5f990572
--- /dev/null
+++ b/common/changes/@itwin/map-layers/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/map-layers",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/map-layers"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/physical-material-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/physical-material-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..6ee1913dc117
--- /dev/null
+++ b/common/changes/@itwin/physical-material-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/physical-material-backend",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/physical-material-backend"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/presentation-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/presentation-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..9347494578cf
--- /dev/null
+++ b/common/changes/@itwin/presentation-backend/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/presentation-backend",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/presentation-backend"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/presentation-common/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/presentation-common/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..0aae6e59b5d4
--- /dev/null
+++ b/common/changes/@itwin/presentation-common/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/presentation-common",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/presentation-common"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/presentation-components/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/presentation-components/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..0367ea9dcaf9
--- /dev/null
+++ b/common/changes/@itwin/presentation-components/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/presentation-components",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/presentation-components"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/presentation-frontend/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/presentation-frontend/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..95ab22d4ca7b
--- /dev/null
+++ b/common/changes/@itwin/presentation-frontend/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/presentation-frontend",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/presentation-frontend"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/presentation-testing/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/presentation-testing/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..1f3f0facaa20
--- /dev/null
+++ b/common/changes/@itwin/presentation-testing/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/presentation-testing",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/presentation-testing"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/rpcinterface-full-stack-tests/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/rpcinterface-full-stack-tests/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..23e7a44f9034
--- /dev/null
+++ b/common/changes/@itwin/rpcinterface-full-stack-tests/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/rpcinterface-full-stack-tests",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/rpcinterface-full-stack-tests"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/webgl-compatibility/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/webgl-compatibility/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..fe337d4c7a8f
--- /dev/null
+++ b/common/changes/@itwin/webgl-compatibility/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/webgl-compatibility",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/webgl-compatibility"
+}
\ No newline at end of file
diff --git a/common/changes/@itwin/workspace-editor/as-upgrade-mocha-latest_2022-05-20-18-17.json b/common/changes/@itwin/workspace-editor/as-upgrade-mocha-latest_2022-05-20-18-17.json
new file mode 100644
index 000000000000..31fa56915a11
--- /dev/null
+++ b/common/changes/@itwin/workspace-editor/as-upgrade-mocha-latest_2022-05-20-18-17.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/workspace-editor",
+      "comment": "upgrade mocha to version 10.0.0",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/workspace-editor"
+}
\ No newline at end of file
diff --git a/common/config/rush/pnpm-lock.yaml b/common/config/rush/pnpm-lock.yaml
index bdf82e2728b7..adf4ede0b4db 100644
--- a/common/config/rush/pnpm-lock.yaml
+++ b/common/config/rush/pnpm-lock.yaml
@@ -36,7 +36,7 @@ importers:
       got: ~11.8.2
       js-base64: ^3.6.1
       lodash: ^4.17.10
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nock: ^12.0.3
       proper-lockfile: ^4.1.2
       qs: ^6.5.1
@@ -80,7 +80,7 @@ importers:
       chai: 4.3.6
       eslint: 7.32.0
       fs-extra: 8.1.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nock: 12.0.3
       rimraf: 3.0.2
       sinon: 9.2.4
@@ -118,7 +118,7 @@ importers:
       internal-tools: workspace:*
       js-base64: ^3.6.1
       json5: ^2.2.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       multiparty: ^4.2.1
       null-loader: ^0.1.1
       nyc: ^15.1.0
@@ -164,7 +164,7 @@ importers:
       dotenv-expand: 5.1.0
       eslint: 7.32.0
       internal-tools: link:../../tools/internal
-      mocha: 8.4.0
+      mocha: 10.0.0
       null-loader: 0.1.1
       nyc: 15.1.0
       rimraf: 3.0.2
@@ -184,7 +184,7 @@ importers:
       chai: ^4.1.2
       chai-as-promised: ^7
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       typescript: ~4.4.0
@@ -198,7 +198,7 @@ importers:
       chai: 4.3.6
       chai-as-promised: 7.1.1_chai@4.3.6
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       typescript: 4.4.4
@@ -219,7 +219,7 @@ importers:
       eslint: ^7.11.0
       flatbuffers: ~1.12.0
       js-base64: ^3.6.1
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       semver: ^5.5.0
@@ -243,7 +243,7 @@ importers:
       '@types/semver': 5.5.0
       chai: 4.3.6
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       typescript: 4.4.4
@@ -270,7 +270,7 @@ importers:
       chai-as-promised: ^7
       cpx2: ^3.0.0
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       sinon: ^9.0.2
@@ -296,7 +296,7 @@ importers:
       chai-as-promised: 7.1.1_chai@4.3.6
       cpx2: 3.0.2
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       sinon: 9.2.4
@@ -319,7 +319,7 @@ importers:
       cpx2: ^3.0.0
       eslint: ^7.11.0
       glob: ^7.1.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       typescript: ~4.4.0
@@ -340,7 +340,7 @@ importers:
       chai-as-promised: 7.1.1_chai@4.3.6
       cpx2: 3.0.2
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       typescript: 4.4.4
@@ -366,7 +366,7 @@ importers:
       chai-as-promised: ^7
       cpx2: ^3.0.0
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       sinon: ^9.0.2
@@ -392,7 +392,7 @@ importers:
       chai-as-promised: 7.1.1_chai@4.3.6
       cpx2: 3.0.2
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       sinon: 9.2.4
@@ -499,7 +499,7 @@ importers:
       eslint: ^7.11.0
       express: ^4.16.3
       express-ws: ^5.0.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       sinon: ^9.0.2
@@ -523,7 +523,7 @@ importers:
       '@types/supertest': 2.0.12
       chai: 4.3.6
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       sinon: 9.2.4
@@ -581,7 +581,7 @@ importers:
       fuse.js: ^3.3.0
       glob: ^7.1.2
       lodash: ^4.17.10
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       qs: ^6.5.1
       rimraf: ^3.0.2
@@ -632,7 +632,7 @@ importers:
       cpx2: 3.0.2
       eslint: 7.32.0
       glob: 7.2.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       sinon: 9.2.4
@@ -684,7 +684,7 @@ importers:
       debug: ^2.6.9
       eslint: ^7.11.0
       flatbuffers: ~1.12.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       semver: ^5.5.0
@@ -702,7 +702,7 @@ importers:
       chai: 4.3.6
       debug: 2.6.9
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       semver: 5.7.1
@@ -725,7 +725,7 @@ importers:
       cpx2: ^3.0.0
       eslint: ^7.11.0
       glob: ^7.1.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       source-map-loader: ^1.0.0
@@ -748,7 +748,7 @@ importers:
       cpx2: 3.0.2
       eslint: 7.32.0
       glob: 7.2.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       source-map-loader: 1.1.3_webpack@4.42.0
@@ -805,7 +805,7 @@ importers:
       cpx2: ^3.0.0
       eslint: ^7.11.0
       glob: ^7.1.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       source-map-loader: ^1.0.0
@@ -828,7 +828,7 @@ importers:
       cpx2: 3.0.2
       eslint: 7.32.0
       glob: 7.2.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       source-map-loader: 1.1.3_webpack@4.42.0
@@ -861,7 +861,7 @@ importers:
       eslint: ^7.11.0
       js-base64: ^3.6.1
       lodash: ^4.17.10
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       qs: ^6.5.1
       rimraf: ^3.0.2
       superagent: ^7.0.1
@@ -896,7 +896,7 @@ importers:
       dotenv: 10.0.0
       dotenv-expand: 5.1.0
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       rimraf: 3.0.2
       typescript: 4.4.4
 
@@ -912,7 +912,7 @@ importers:
       cpx2: ^3.0.0
       debug: ^2.6.9
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       semver: ^5.5.0
@@ -928,7 +928,7 @@ importers:
       cpx2: 3.0.2
       debug: 2.6.9
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       semver: 5.7.1
@@ -948,7 +948,7 @@ importers:
       chai: ^4.1.2
       chai-as-promised: ^7
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       sinon: ^9.0.2
@@ -966,7 +966,7 @@ importers:
       chai: 4.3.6
       chai-as-promised: 7.1.1_chai@4.3.6
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       sinon: 9.2.4
@@ -984,7 +984,7 @@ importers:
       '@types/node': 14.14.31
       chai: ^4.1.2
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       rimraf: ^3.0.2
       source-map-loader: ^1.0.0
       typescript: ~4.4.0
@@ -1001,7 +1001,7 @@ importers:
       '@types/node': 14.14.31
       chai: 4.3.6
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       rimraf: 3.0.2
       source-map-loader: 1.1.3_webpack@4.42.0
       typescript: 4.4.4
@@ -1026,7 +1026,7 @@ importers:
       chai-as-promised: ^7
       cpx2: ^3.0.0
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       npm-run-all: ^4.1.5
       nyc: ^15.1.0
       rimraf: ^3.0.2
@@ -1053,7 +1053,7 @@ importers:
       chai-as-promised: 7.1.1_chai@4.3.6
       cpx2: 3.0.2
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       npm-run-all: 4.1.5
       nyc: 15.1.0
       rimraf: 3.0.2
@@ -1072,7 +1072,7 @@ importers:
       chai: ^4.1.2
       eslint: ^7.11.0
       glob: ^7.1.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       rimraf: ^3.0.2
       source-map-loader: ^1.0.0
       typescript: ~4.4.0
@@ -1089,7 +1089,7 @@ importers:
       chai: 4.3.6
       eslint: 7.32.0
       glob: 7.2.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       rimraf: 3.0.2
       source-map-loader: 1.1.3_webpack@4.42.0
       typescript: 4.4.4
@@ -1110,7 +1110,7 @@ importers:
       chai: ^4.1.2
       cpx2: ^3.0.0
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       semver: ^5.5.0
@@ -1131,7 +1131,7 @@ importers:
       chai: 4.3.6
       cpx2: 3.0.2
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       typescript: 4.4.4
@@ -1151,7 +1151,7 @@ importers:
       chai: ^4.1.2
       cpx2: ^3.0.0
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       typescript: ~4.4.0
@@ -1169,7 +1169,7 @@ importers:
       chai: 4.3.6
       cpx2: 3.0.2
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       typescript: 4.4.4
@@ -1185,7 +1185,7 @@ importers:
       '@types/mocha': ^8.2.2
       chai: ^4.1.2
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       typescript: ~4.4.0
@@ -1199,7 +1199,7 @@ importers:
       '@types/mocha': 8.2.3
       chai: 4.3.6
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       typescript: 4.4.4
@@ -1217,7 +1217,7 @@ importers:
       '@types/node': 14.14.31
       chai: ^4.1.2
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       typescript: ~4.4.0
@@ -1233,7 +1233,7 @@ importers:
       '@types/node': 14.14.31
       chai: 4.3.6
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       typescript: 4.4.4
@@ -1276,7 +1276,7 @@ importers:
       '@types/semver': ^5.5.0
       chai: ^4.1.2
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       rimraf: ^3.0.2
       typescript: ~4.4.0
     devDependencies:
@@ -1291,7 +1291,7 @@ importers:
       '@types/semver': 5.5.0
       chai: 4.3.6
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       rimraf: 3.0.2
       typescript: 4.4.4
 
@@ -1344,7 +1344,7 @@ importers:
       cpx2: ^3.0.0
       electron: ^14.0.0
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       rimraf: ^3.0.2
       typescript: ~4.4.0
     dependencies:
@@ -1365,7 +1365,7 @@ importers:
       chai: 4.3.6
       cpx2: 3.0.2
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       rimraf: 3.0.2
       typescript: 4.4.4
 
@@ -1392,7 +1392,7 @@ importers:
       cpx2: ^3.0.0
       eslint: ^7.11.0
       fs-extra: ^8.1.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       rimraf: ^3.0.2
       typescript: ~4.4.0
     dependencies:
@@ -1418,7 +1418,7 @@ importers:
       chai-as-promised: 7.1.1_chai@4.3.6
       cpx2: 3.0.2
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       rimraf: 3.0.2
       typescript: 4.4.4
 
@@ -1489,7 +1489,7 @@ importers:
       eslint: ^7.11.0
       jsdom: ^19.0.0
       jsdom-global: 3.0.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       react: ^17.0.0
       react-beautiful-dnd: ^13.0.0
@@ -1540,7 +1540,7 @@ importers:
       eslint: 7.32.0
       jsdom: 19.0.0
       jsdom-global: 3.0.2_jsdom@19.0.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       react: 17.0.2
       react-dom: 17.0.2_react@17.0.2
@@ -1577,7 +1577,7 @@ importers:
       eslint: ^7.11.0
       jsdom: ^19.0.0
       jsdom-global: 3.0.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       react: ^17.0.0
       react-dom: ^17.0.0
@@ -1616,7 +1616,7 @@ importers:
       eslint: 7.32.0
       jsdom: 19.0.0
       jsdom-global: 3.0.2_jsdom@19.0.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       sinon: 9.2.4
@@ -1695,7 +1695,7 @@ importers:
       fs-extra: ^8.1.0
       internal-tools: workspace:*
       mkdirp: ^1.0.4
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       npm-run-all: ^4.1.5
       nyc: ^15.1.0
       rimraf: ^3.0.2
@@ -1738,7 +1738,7 @@ importers:
       dotenv-expand: 5.1.0
       eslint: 7.32.0
       fs-extra: 8.1.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
     devDependencies:
@@ -1897,7 +1897,7 @@ importers:
       dotenv-expand: ^5.1.0
       eslint: ^7.11.0
       internal-tools: workspace:*
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       npm-run-all: ^4.1.5
       null-loader: ^0.1.1
       openid-client: ^4.7.4
@@ -1929,7 +1929,7 @@ importers:
       chai-as-promised: 7.1.1_chai@4.3.6
       dotenv: 10.0.0
       dotenv-expand: 5.1.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       openid-client: 4.9.1
       puppeteer: 5.3.1
     devDependencies:
@@ -2007,7 +2007,7 @@ importers:
       internal-tools: workspace:*
       jsdom: ^19.0.0
       jsdom-global: 3.0.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       react: ^17.0.0
       react-dom: ^17.0.0
       react-test-renderer: ^17.0.0
@@ -2056,7 +2056,7 @@ importers:
       faker: 4.1.0
       fast-sort: 3.1.3
       immer: 9.0.6
-      mocha: 8.4.0
+      mocha: 10.0.0
       react: 17.0.2
       react-dom: 17.0.2_react@17.0.2
       react-test-renderer: 17.0.2_react@17.0.2
@@ -2177,7 +2177,7 @@ importers:
       dotenv-expand: ^5.1.0
       eslint: ^7.11.0
       internal-tools: workspace:*
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       npm-run-all: ^4.1.5
       null-loader: ^0.1.1
       openid-client: ^4.7.4
@@ -2208,7 +2208,7 @@ importers:
       chai-as-promised: 7.1.1_chai@4.3.6
       dotenv: 10.0.0
       dotenv-expand: 5.1.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       openid-client: 4.9.1
       puppeteer: 5.3.1
     devDependencies:
@@ -2264,7 +2264,7 @@ importers:
       eslint: ^7.11.0
       faker: ^4.1.0
       lolex: ^2.7.1
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       object-hash: ^1.3.1
       rimraf: ^3.0.2
@@ -2307,7 +2307,7 @@ importers:
       eslint: 7.32.0
       faker: 4.1.0
       lolex: 2.7.5
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       sinon: 9.2.4
@@ -2342,7 +2342,7 @@ importers:
       eslint: ^7.11.0
       faker: ^4.1.0
       json-schema-faker: 0.5.0-rc16
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       sinon: ^9.0.2
@@ -2377,7 +2377,7 @@ importers:
       eslint: 7.32.0
       faker: 4.1.0
       json-schema-faker: 0.5.0-rc16
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       sinon: 9.2.4
@@ -2431,7 +2431,7 @@ importers:
       jsdom: ^19.0.0
       jsdom-global: 3.0.2
       micro-memoize: ^4.0.9
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       react: ^17.0.0
       react-dom: ^17.0.0
@@ -2488,7 +2488,7 @@ importers:
       ignore-styles: 5.0.1
       jsdom: 19.0.0
       jsdom-global: 3.0.2_jsdom@19.0.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       react: 17.0.2
       react-dom: 17.0.2_react@17.0.2
@@ -2529,7 +2529,7 @@ importers:
       faker: ^4.1.0
       jsdom: ^19.0.0
       jsdom-global: 3.0.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       sinon: ^9.0.2
@@ -2565,7 +2565,7 @@ importers:
       faker: 4.1.0
       jsdom: 19.0.0
       jsdom-global: 3.0.2_jsdom@19.0.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       sinon: 9.2.4
@@ -2608,7 +2608,7 @@ importers:
       jsdom: ^19.0.0
       jsdom-global: 3.0.2
       make-dir: ^1.3.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       sinon: ^9.0.2
@@ -2647,7 +2647,7 @@ importers:
       jsdom: 19.0.0
       jsdom-global: 3.0.2_jsdom@19.0.0
       make-dir: 1.3.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       sinon: 9.2.4
@@ -2890,7 +2890,7 @@ importers:
       '@types/yargs': ^12.0.5
       chai: ^4.1.2
       eslint: ^7.11.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       rimraf: ^3.0.2
       typescript: ~4.4.0
       yargs: ^16.0.0
@@ -2909,7 +2909,7 @@ importers:
       '@types/node': 14.14.31
       '@types/yargs': 12.0.20
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       rimraf: 3.0.2
       typescript: 4.4.4
 
@@ -3040,7 +3040,7 @@ importers:
       eslint: ^7.11.0
       fs-extra: ^8.1.0
       internal-tools: workspace:*
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       rimraf: ^3.0.2
       typescript: ~4.4.0
       yargs: ^16.0.0
@@ -3069,7 +3069,7 @@ importers:
       cross-env: 5.2.1
       eslint: 7.32.0
       internal-tools: link:../../tools/internal
-      mocha: 8.4.0
+      mocha: 10.0.0
       rimraf: 3.0.2
       typescript: 4.4.4
 
@@ -3450,7 +3450,7 @@ importers:
       eslint: ^7.11.0
       fs-extra: ^8.1.0
       glob: ^7.1.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       mocha-junit-reporter: ^1.16.0
       recursive-readdir: ^2.2.2
       rimraf: ^3.0.2
@@ -3467,8 +3467,8 @@ importers:
       cross-spawn: 7.0.3
       fs-extra: 8.1.0
       glob: 7.2.0
-      mocha: 8.4.0
-      mocha-junit-reporter: 1.23.3_mocha@8.4.0
+      mocha: 10.0.0
+      mocha-junit-reporter: 1.23.3_mocha@10.0.0
       recursive-readdir: 2.2.2
       rimraf: 3.0.2
       tree-kill: 1.2.2
@@ -3501,7 +3501,7 @@ importers:
       express: ^4.16.3
       jsonc-parser: ~2.0.3
       lodash: ^4.17.10
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       puppeteer: chrome-86
       rimraf: ^3.0.2
@@ -3514,7 +3514,7 @@ importers:
       express: 4.18.1
       jsonc-parser: 2.0.3
       lodash: 4.17.21
-      mocha: 8.4.0
+      mocha: 10.0.0
       puppeteer: 5.3.1
       source-map-support: 0.5.21
       uuid: 7.0.3
@@ -3560,7 +3560,7 @@ importers:
       cpx2: ^3.0.0
       eslint: ^7.11.0
       fs-extra: ^8.1.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       rimraf: ^3.0.2
       source-map-support: ^0.5.6
@@ -3588,7 +3588,7 @@ importers:
       chai: 4.3.6
       cpx2: 3.0.2
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       source-map-support: 0.5.21
@@ -3613,7 +3613,7 @@ importers:
       eslint-plugin-prefer-arrow: 1.2.3
       eslint-plugin-react: 7.24.0
       eslint-plugin-react-hooks: 4.2.0
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       require-dir: ^1.2.0
       typescript: ~4.4.0
     dependencies:
@@ -3636,19 +3636,19 @@ importers:
       '@types/node': 14.14.31
       '@typescript-eslint/typescript-estree': 4.31.2_typescript@4.4.4
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       typescript: 4.4.4
 
   ../../tools/internal:
     specifiers:
       '@itwin/build-tools': workspace:*
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       yargs: ^16.0.0
     dependencies:
       yargs: 16.2.0
     devDependencies:
       '@itwin/build-tools': link:../build
-      mocha: 8.4.0
+      mocha: 10.0.0
 
   ../../tools/perf-tools:
     specifiers:
@@ -3695,7 +3695,7 @@ importers:
       glob: ^7.1.2
       lodash: ^4.17.10
       memfs: ^3.2.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       resolve: 1.19.0
       rimraf: ^3.0.2
@@ -3734,7 +3734,7 @@ importers:
       cpx2: 3.0.2
       eslint: 7.32.0
       memfs: 3.4.1
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       rimraf: 3.0.2
       typescript: 4.4.4
@@ -3763,7 +3763,7 @@ importers:
       ignore-styles: ^5.0.1
       jsdom: ^19.0.0
       jsdom-global: 3.0.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       raf: ^3.4.0
       rimraf: ^3.0.2
@@ -3795,7 +3795,7 @@ importers:
       ignore-styles: 5.0.1
       jsdom: 19.0.0
       jsdom-global: 3.0.2_jsdom@19.0.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       raf: 3.4.1
       rimraf: 3.0.2
@@ -3842,7 +3842,7 @@ importers:
       immer: 9.0.6
       jsdom: ^19.0.0
       jsdom-global: 3.0.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       raf: ^3.4.0
       react: ^17.0.0
@@ -3895,7 +3895,7 @@ importers:
       ignore-styles: 5.0.1
       jsdom: 19.0.0
       jsdom-global: 3.0.2_jsdom@19.0.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       raf: 3.4.1
       react: 17.0.2
@@ -3966,7 +3966,7 @@ importers:
       jsdom: ^19.0.0
       jsdom-global: 3.0.2
       lodash: ^4.17.10
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       npm-run-all: ^4.1.5
       nyc: ^15.1.0
       raf: ^3.4.0
@@ -4046,7 +4046,7 @@ importers:
       ignore-styles: 5.0.1
       jsdom: 19.0.0
       jsdom-global: 3.0.2_jsdom@19.0.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       npm-run-all: 4.1.5
       nyc: 15.1.0
       raf: 3.4.1
@@ -4121,7 +4121,7 @@ importers:
       jsdom-global: 3.0.2
       linkify-it: ~2.2.0
       lodash: ^4.17.10
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       raf: ^3.4.0
       react: ^17.0.0
@@ -4212,7 +4212,7 @@ importers:
       ignore-styles: 5.0.1
       jsdom: 19.0.0
       jsdom-global: 3.0.2_jsdom@19.0.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       raf: 3.4.1
       react: 17.0.2
@@ -4273,7 +4273,7 @@ importers:
       jsdom: ^19.0.0
       jsdom-global: 3.0.2
       lodash: ^4.17.10
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       raf: ^3.4.0
       react: ^17.0.0
@@ -4338,7 +4338,7 @@ importers:
       ignore-styles: 5.0.1
       jsdom: 19.0.0
       jsdom-global: 3.0.2_jsdom@19.0.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       raf: 3.4.1
       react: 17.0.2
@@ -4405,7 +4405,7 @@ importers:
       immutable: ^3.8.2
       jsdom: ^19.0.0
       jsdom-global: 3.0.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       nyc: ^15.1.0
       raf: ^3.4.0
       react: ^17.0.0
@@ -4472,7 +4472,7 @@ importers:
       ignore-styles: 5.0.1
       jsdom: 19.0.0
       jsdom-global: 3.0.2_jsdom@19.0.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       nyc: 15.1.0
       raf: 3.4.1
       react: 17.0.2
@@ -4499,7 +4499,7 @@ importers:
       '@types/yargs': ^12.0.5
       eslint: ^7.11.0
       glob: ^7.1.2
-      mocha: ^8.3.2
+      mocha: ^10.0.0
       rimraf: ^3.0.2
       typescript: ~4.4.0
       yargs: ^16.0.0
@@ -4517,7 +4517,7 @@ importers:
       '@types/mocha': 8.2.3
       '@types/yargs': 12.0.20
       eslint: 7.32.0
-      mocha: 8.4.0
+      mocha: 10.0.0
       rimraf: 3.0.2
       typescript: 4.4.4
 
@@ -10167,7 +10167,7 @@ packages:
     dev: true
 
   /buffer-crc32/0.2.13:
-    resolution: {integrity: sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI=}
+    resolution: {integrity: sha512-VO9Ht/+p3SN7SKWqcrgEzjGbRSJYTx+Q1pTQC0wrWqHx0vpJraQ6GtHx8tvcg1rlK1byhU5gccxgOgj7B0TDkQ==}
 
   /buffer-equal-constant-time/1.0.1:
     resolution: {integrity: sha1-+OcRMvf/5uAaXJaXpMbz5I1cyBk=}
@@ -11489,6 +11489,18 @@ packages:
     dependencies:
       ms: 2.1.2
 
+  /debug/4.3.4_supports-color@8.1.1:
+    resolution: {integrity: sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==}
+    engines: {node: '>=6.0'}
+    peerDependencies:
+      supports-color: '*'
+    peerDependenciesMeta:
+      supports-color:
+        optional: true
+    dependencies:
+      ms: 2.1.2
+      supports-color: 8.1.1
+
   /decamelize/1.2.0:
     resolution: {integrity: sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=}
     engines: {node: '>=0.10.0'}
@@ -14828,6 +14840,10 @@ packages:
   /is-typedarray/1.0.0:
     resolution: {integrity: sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=}
 
+  /is-unicode-supported/0.1.0:
+    resolution: {integrity: sha512-knxG2q4UC3u8stRGyAVJCOdxFmv5DZiRcdlIaAQXAbSfJya+OhopNotLQrstBhququ4ZpuKbDc/8S6mgXgPFPw==}
+    engines: {node: '>=10'}
+
   /is-weakref/1.0.2:
     resolution: {integrity: sha512-qctsuLZmIQ0+vSSMfoVvyFe2+GSEvnmZ2ezTup1SBse9+twCCeial6EEi3Nc2KFcf6+qz2FBPnjXsk8xhKSaPQ==}
     dependencies:
@@ -15589,7 +15605,6 @@ packages:
     hasBin: true
     dependencies:
       argparse: 2.0.1
-    dev: true
 
   /jsbi/3.2.5:
     resolution: {integrity: sha512-aBE4n43IPvjaddScbvWRA2YlTzKEynHzu7MqOyTipdHucf/VxS63ViCjxYRg86M8Rxwbt/GfzHl1kKERkt45fQ==}
@@ -16162,6 +16177,13 @@ packages:
     dependencies:
       chalk: 4.1.2
 
+  /log-symbols/4.1.0:
+    resolution: {integrity: sha512-8XPvpAA8uyhfteu8pIvQxpJZ7SYYdpUivZpGy6sFsBuKRY/7rQGavedeB8aK+Zkyq6upMFVL/9AW6vOYzfRyLg==}
+    engines: {node: '>=10'}
+    dependencies:
+      chalk: 4.1.2
+      is-unicode-supported: 0.1.0
+
   /logform/2.4.0:
     resolution: {integrity: sha512-CPSJw4ftjf517EhXZGGvTHHkYobo7ZCc0kvwUoOYcjfR2UVrI66RHj8MCrfAdEitdmFqbu2BYdYs8FHHZSb6iw==}
     dependencies:
@@ -16630,7 +16652,7 @@ packages:
     engines: {node: '>=10'}
     hasBin: true
 
-  /mocha-junit-reporter/1.23.3_mocha@8.4.0:
+  /mocha-junit-reporter/1.23.3_mocha@10.0.0:
     resolution: {integrity: sha512-ed8LqbRj1RxZfjt/oC9t12sfrWsjZ3gNnbhV1nuj9R/Jb5/P3Xb4duv2eCfCDMYH+fEu0mqca7m4wsiVjsxsvA==}
     peerDependencies:
       mocha: '>=2.2.5'
@@ -16638,11 +16660,39 @@ packages:
       debug: 2.6.9
       md5: 2.3.0
       mkdirp: 0.5.6
-      mocha: 8.4.0
+      mocha: 10.0.0
       strip-ansi: 4.0.0
       xml: 1.0.1
     dev: false
 
+  /mocha/10.0.0:
+    resolution: {integrity: sha512-0Wl+elVUD43Y0BqPZBzZt8Tnkw9CMUdNYnUsTfOM1vuhJVZL+kiesFYsqwBkEEuEixaiPe5ZQdqDgX2jddhmoA==}
+    engines: {node: '>= 14.0.0'}
+    hasBin: true
+    dependencies:
+      '@ungap/promise-all-settled': 1.1.2
+      ansi-colors: 4.1.1
+      browser-stdout: 1.3.1
+      chokidar: 3.5.3
+      debug: 4.3.4_supports-color@8.1.1
+      diff: 5.0.0
+      escape-string-regexp: 4.0.0
+      find-up: 5.0.0
+      glob: 7.2.0
+      he: 1.2.0
+      js-yaml: 4.1.0
+      log-symbols: 4.1.0
+      minimatch: 5.0.1
+      ms: 2.1.3
+      nanoid: 3.3.3
+      serialize-javascript: 6.0.0
+      strip-json-comments: 3.1.1
+      supports-color: 8.1.1
+      workerpool: 6.2.1
+      yargs: 16.2.0
+      yargs-parser: 20.2.4
+      yargs-unparser: 2.0.0
+
   /mocha/8.4.0:
     resolution: {integrity: sha512-hJaO0mwDXmZS4ghXsvPVriOhsxQ7ofcpQdm8dE+jISUOKopitvnXFQmpRR7jd2K6VBG6E26gU3IAbXXGIbu4sQ==}
     engines: {node: '>= 10.12.0'}
@@ -16782,6 +16832,11 @@ packages:
     engines: {node: ^10 || ^12 || ^13.7 || ^14 || >=15.0.1}
     hasBin: true
 
+  /nanoid/3.3.3:
+    resolution: {integrity: sha512-p1sjXuopFs0xg+fPASzQ28agW1oHD7xDsd9Xkf3T15H3c/cifrFHVwrh74PdoklAPi+i7MdRsE47vm2r6JoB+w==}
+    engines: {node: ^10 || ^12 || ^13.7 || ^14 || >=15.0.1}
+    hasBin: true
+
   /nanoid/3.3.4:
     resolution: {integrity: sha512-MqBkQh/OHTS2egovRtLk45wEyNXwF+cokD+1YPf9u5VfJiRdAiRwB2froX5Co9Rh20xs4siNPm8naNotSD6RBw==}
     engines: {node: ^10 || ^12 || ^13.7 || ^14 || >=15.0.1}
@@ -19979,7 +20034,6 @@ packages:
     resolution: {integrity: sha512-Qr3TosvguFt8ePWqsvRfrKyQXIiW+nGbYpy8XK24NQHE83caxWt+mIymTT19DGFbNWNLfEwsrkSmN64lVWB9ag==}
     dependencies:
       randombytes: 2.1.0
-    dev: true
 
   /serve-index/1.9.1:
     resolution: {integrity: sha1-03aNabHn2C5c4FD/9bRTvqEqkjk=}
@@ -22342,6 +22396,9 @@ packages:
   /workerpool/6.1.0:
     resolution: {integrity: sha512-toV7q9rWNYha963Pl/qyeZ6wG+3nnsyvolaNUS8+R5Wtw6qJPTxIlOP1ZSvcGhEJw+l3HMMmtiNo9Gl61G4GVg==}
 
+  /workerpool/6.2.1:
+    resolution: {integrity: sha512-ILEIE97kDZvF9Wb9f6h5aXK4swSlKGUcOEGiIYb2OOu/IrDU9iwj0fD//SsA6E5ibwJxpEvhullJY4Sl4GcpAw==}
+
   /wrap-ansi/5.1.0:
     resolution: {integrity: sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==}
     engines: {node: '>=6'}
diff --git a/core/backend/package.json b/core/backend/package.json
index 91e70edf0914..e44212d5958a 100644
--- a/core/backend/package.json
+++ b/core/backend/package.json
@@ -80,7 +80,7 @@
     "eslint": "^7.11.0",
     "fs-extra": "^8.1.0",
     "internal-tools": "workspace:*",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "null-loader": "^0.1.1",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
diff --git a/core/bentley/package.json b/core/bentley/package.json
index 3ed89da04c76..a024ca611bbe 100644
--- a/core/bentley/package.json
+++ b/core/bentley/package.json
@@ -42,7 +42,7 @@
     "chai": "^4.1.2",
     "chai-as-promised": "^7",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
diff --git a/core/common/package.json b/core/common/package.json
index 530d91f52331..448f526d1bfe 100644
--- a/core/common/package.json
+++ b/core/common/package.json
@@ -57,7 +57,7 @@
     "@types/semver": "^5.5.0",
     "chai": "^4.1.2",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
diff --git a/core/ecschema-editing/package.json b/core/ecschema-editing/package.json
index ffcd19378b69..b233950630a1 100644
--- a/core/ecschema-editing/package.json
+++ b/core/ecschema-editing/package.json
@@ -55,7 +55,7 @@
     "chai-as-promised": "^7",
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
diff --git a/core/ecschema-locaters/package.json b/core/ecschema-locaters/package.json
index 9bc548d00f8a..4c9fa58fb118 100644
--- a/core/ecschema-locaters/package.json
+++ b/core/ecschema-locaters/package.json
@@ -47,7 +47,7 @@
     "chai-as-promised": "^7",
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
diff --git a/core/ecschema-metadata/package.json b/core/ecschema-metadata/package.json
index 5dea7a0d940f..3c8b983afffa 100644
--- a/core/ecschema-metadata/package.json
+++ b/core/ecschema-metadata/package.json
@@ -52,7 +52,7 @@
     "chai-as-promised": "^7",
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
diff --git a/core/express-server/package.json b/core/express-server/package.json
index 20550627825a..5ca0f14e95db 100644
--- a/core/express-server/package.json
+++ b/core/express-server/package.json
@@ -49,7 +49,7 @@
     "@types/express-ws": "^3.0.1",
     "chai": "^4.1.2",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
diff --git a/core/frontend/package.json b/core/frontend/package.json
index 632d8704dcd1..65bee113351b 100644
--- a/core/frontend/package.json
+++ b/core/frontend/package.json
@@ -77,7 +77,7 @@
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
     "glob": "^7.1.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
diff --git a/core/geometry/package.json b/core/geometry/package.json
index 492849615e4b..d5eb62ed1899 100644
--- a/core/geometry/package.json
+++ b/core/geometry/package.json
@@ -45,7 +45,7 @@
     "chai": "^4.1.2",
     "debug": "^2.6.9",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "semver": "^5.5.0",
diff --git a/core/hypermodeling/package.json b/core/hypermodeling/package.json
index bb980f8386cb..bc99310c1cb0 100644
--- a/core/hypermodeling/package.json
+++ b/core/hypermodeling/package.json
@@ -57,7 +57,7 @@
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
     "glob": "^7.1.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "source-map-loader": "^1.0.0",
diff --git a/core/markup/package.json b/core/markup/package.json
index 75bc0d1349a7..74b782bfccc5 100644
--- a/core/markup/package.json
+++ b/core/markup/package.json
@@ -62,7 +62,7 @@
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
     "glob": "^7.1.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "source-map-loader": "^1.0.0",
diff --git a/core/mobile/package.json b/core/mobile/package.json
index 0beda12943e3..f0bc754ecc60 100644
--- a/core/mobile/package.json
+++ b/core/mobile/package.json
@@ -69,7 +69,7 @@
     "dotenv-expand": "^5.1.0",
     "eslint": "^7.11.0",
     "js-base64": "^3.6.1",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
   },
diff --git a/core/orbitgt/package.json b/core/orbitgt/package.json
index 59c62ec544f0..798c34a012da 100644
--- a/core/orbitgt/package.json
+++ b/core/orbitgt/package.json
@@ -41,7 +41,7 @@
     "cpx2": "^3.0.0",
     "debug": "^2.6.9",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "semver": "^5.5.0",
diff --git a/core/quantity/package.json b/core/quantity/package.json
index 47e1a6b8b1e7..b3486505638c 100644
--- a/core/quantity/package.json
+++ b/core/quantity/package.json
@@ -45,7 +45,7 @@
     "chai": "^4.1.2",
     "chai-as-promised": "^7",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
diff --git a/core/telemetry/package.json b/core/telemetry/package.json
index a0e88f9fa40b..df8318c273b7 100644
--- a/core/telemetry/package.json
+++ b/core/telemetry/package.json
@@ -45,7 +45,7 @@
     "@types/node": "14.14.31",
     "chai": "^4.1.2",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "rimraf": "^3.0.2",
     "source-map-loader": "^1.0.0",
     "typescript": "~4.4.0",
diff --git a/core/transformer/package.json b/core/transformer/package.json
index 196195924fd3..d8317ab14768 100644
--- a/core/transformer/package.json
+++ b/core/transformer/package.json
@@ -65,7 +65,7 @@
     "chai-as-promised": "^7",
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "npm-run-all": "^4.1.5",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
diff --git a/core/webgl-compatibility/package.json b/core/webgl-compatibility/package.json
index 9d82e99c4be8..c754833f3768 100644
--- a/core/webgl-compatibility/package.json
+++ b/core/webgl-compatibility/package.json
@@ -48,7 +48,7 @@
     "chai": "^4.1.2",
     "eslint": "^7.11.0",
     "glob": "^7.1.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "rimraf": "^3.0.2",
     "source-map-loader": "^1.0.0",
     "typescript": "~4.4.0",
diff --git a/domains/analytical/backend/package.json b/domains/analytical/backend/package.json
index 8953ed728a9f..6f2c708d6d38 100644
--- a/domains/analytical/backend/package.json
+++ b/domains/analytical/backend/package.json
@@ -54,7 +54,7 @@
     "chai": "^4.1.2",
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
diff --git a/domains/linear-referencing/backend/package.json b/domains/linear-referencing/backend/package.json
index 3279759c4148..1717b90774de 100644
--- a/domains/linear-referencing/backend/package.json
+++ b/domains/linear-referencing/backend/package.json
@@ -55,7 +55,7 @@
     "chai": "^4.1.2",
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
diff --git a/domains/linear-referencing/common/package.json b/domains/linear-referencing/common/package.json
index c1bbb6679ca6..4f5c0a21ad40 100644
--- a/domains/linear-referencing/common/package.json
+++ b/domains/linear-referencing/common/package.json
@@ -49,7 +49,7 @@
     "@types/mocha": "^8.2.2",
     "chai": "^4.1.2",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
diff --git a/domains/physical-material/backend/package.json b/domains/physical-material/backend/package.json
index b0a58d24b795..f6b18c829da8 100644
--- a/domains/physical-material/backend/package.json
+++ b/domains/physical-material/backend/package.json
@@ -52,7 +52,7 @@
     "@types/node": "14.14.31",
     "chai": "^4.1.2",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
diff --git a/editor/common/package.json b/editor/common/package.json
index a6d062ef74fa..65a779360c6a 100644
--- a/editor/common/package.json
+++ b/editor/common/package.json
@@ -50,7 +50,7 @@
     "@types/semver": "^5.5.0",
     "chai": "^4.1.2",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
   },
diff --git a/example-code/app/package.json b/example-code/app/package.json
index 66f33c0091d0..b04fd5d44e59 100644
--- a/example-code/app/package.json
+++ b/example-code/app/package.json
@@ -36,7 +36,7 @@
     "chai": "^4.1.2",
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
   },
diff --git a/example-code/snippets/package.json b/example-code/snippets/package.json
index 0d1f74ac2a64..6e7416d2439f 100644
--- a/example-code/snippets/package.json
+++ b/example-code/snippets/package.json
@@ -40,7 +40,7 @@
     "chai-as-promised": "^7",
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
   },
diff --git a/extensions/map-layers-auth/package.json b/extensions/map-layers-auth/package.json
index 4858e6431419..87bbe1b1ca2d 100644
--- a/extensions/map-layers-auth/package.json
+++ b/extensions/map-layers-auth/package.json
@@ -63,7 +63,7 @@
     "eslint": "^7.11.0",
     "jsdom": "^19.0.0",
     "jsdom-global": "3.0.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
diff --git a/extensions/map-layers/package.json b/extensions/map-layers/package.json
index 16f6bbe3519c..4db1b8b83c9e 100644
--- a/extensions/map-layers/package.json
+++ b/extensions/map-layers/package.json
@@ -74,7 +74,7 @@
     "eslint": "^7.11.0",
     "jsdom": "^19.0.0",
     "jsdom-global": "3.0.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "react": "^17.0.0",
     "react-dom": "^17.0.0",
diff --git a/extensions/test-extension/package.json b/extensions/test-extension/package.json
index dcd5ab2c84e1..e82ff1865a6e 100644
--- a/extensions/test-extension/package.json
+++ b/extensions/test-extension/package.json
@@ -51,4 +51,4 @@
   "activationEvents": [
     "onStartup"
   ]
-}
\ No newline at end of file
+}
diff --git a/full-stack-tests/backend/package.json b/full-stack-tests/backend/package.json
index e33158edd929..81415130cb81 100644
--- a/full-stack-tests/backend/package.json
+++ b/full-stack-tests/backend/package.json
@@ -64,7 +64,7 @@
     "dotenv-expand": "^5.1.0",
     "eslint": "^7.11.0",
     "fs-extra": "^8.1.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2"
   },
diff --git a/full-stack-tests/ecschema-rpc-interface/package.json b/full-stack-tests/ecschema-rpc-interface/package.json
index 946375eab8ce..808ecd3beb87 100644
--- a/full-stack-tests/ecschema-rpc-interface/package.json
+++ b/full-stack-tests/ecschema-rpc-interface/package.json
@@ -47,7 +47,7 @@
     "chai-as-promised": "^7",
     "dotenv": "^10.0.0",
     "dotenv-expand": "^5.1.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "openid-client": "^4.7.4",
     "puppeteer": "chrome-86"
   },
diff --git a/full-stack-tests/presentation/package.json b/full-stack-tests/presentation/package.json
index 235de03d89be..a002c2290644 100644
--- a/full-stack-tests/presentation/package.json
+++ b/full-stack-tests/presentation/package.json
@@ -62,7 +62,7 @@
     "faker": "^4.1.0",
     "fast-sort": "^3.0.2",
     "immer": "9.0.6",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "react": "^17.0.0",
     "react-dom": "^17.0.0",
     "react-test-renderer": "^17.0.0",
diff --git a/full-stack-tests/rpc-interface/package.json b/full-stack-tests/rpc-interface/package.json
index c721e7ada154..4a2d9f6cc690 100644
--- a/full-stack-tests/rpc-interface/package.json
+++ b/full-stack-tests/rpc-interface/package.json
@@ -53,7 +53,7 @@
     "chai-as-promised": "^7",
     "dotenv": "^10.0.0",
     "dotenv-expand": "^5.1.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "openid-client": "^4.7.4",
     "puppeteer": "chrome-86"
   },
diff --git a/presentation/backend/package.json b/presentation/backend/package.json
index 6530ee43fc1f..c5cf2d36c51e 100644
--- a/presentation/backend/package.json
+++ b/presentation/backend/package.json
@@ -76,7 +76,7 @@
     "eslint": "^7.11.0",
     "faker": "^4.1.0",
     "lolex": "^2.7.1",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
diff --git a/presentation/common/package.json b/presentation/common/package.json
index 06bfdac252d4..5324d6546e37 100644
--- a/presentation/common/package.json
+++ b/presentation/common/package.json
@@ -76,7 +76,7 @@
     "eslint": "^7.11.0",
     "faker": "^4.1.0",
     "json-schema-faker": "0.5.0-rc16",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
diff --git a/presentation/components/package.json b/presentation/components/package.json
index e705be7e7a8e..ce95570842aa 100644
--- a/presentation/components/package.json
+++ b/presentation/components/package.json
@@ -104,7 +104,7 @@
     "ignore-styles": "^5.0.1",
     "jsdom": "^19.0.0",
     "jsdom-global": "3.0.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "react": "^17.0.0",
     "react-dom": "^17.0.0",
diff --git a/presentation/frontend/package.json b/presentation/frontend/package.json
index eb039a29d5a9..947bb23d750b 100644
--- a/presentation/frontend/package.json
+++ b/presentation/frontend/package.json
@@ -75,7 +75,7 @@
     "faker": "^4.1.0",
     "jsdom": "^19.0.0",
     "jsdom-global": "3.0.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
diff --git a/presentation/testing/package.json b/presentation/testing/package.json
index eea43f170976..92d2bc6116af 100644
--- a/presentation/testing/package.json
+++ b/presentation/testing/package.json
@@ -72,7 +72,7 @@
     "jsdom": "^19.0.0",
     "jsdom-global": "3.0.2",
     "make-dir": "^1.3.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
diff --git a/test-apps/display-performance-test-app/package.json b/test-apps/display-performance-test-app/package.json
index 1baf623b3801..662f483548a6 100644
--- a/test-apps/display-performance-test-app/package.json
+++ b/test-apps/display-performance-test-app/package.json
@@ -103,4 +103,4 @@
       ]
     }
   }
-}
\ No newline at end of file
+}
diff --git a/test-apps/display-test-app/package.json b/test-apps/display-test-app/package.json
index 71c97ecdd064..392730ec52bb 100644
--- a/test-apps/display-test-app/package.json
+++ b/test-apps/display-test-app/package.json
@@ -116,4 +116,4 @@
       ]
     }
   }
-}
\ No newline at end of file
+}
diff --git a/test-apps/export-gltf/package.json b/test-apps/export-gltf/package.json
index 26432c9066a8..2d61dc691af3 100644
--- a/test-apps/export-gltf/package.json
+++ b/test-apps/export-gltf/package.json
@@ -35,4 +35,4 @@
     ],
     "extends": "plugin:@itwin/itwinjs-recommended"
   }
-}
\ No newline at end of file
+}
diff --git a/test-apps/imjs-importer/package.json b/test-apps/imjs-importer/package.json
index d1cffbd6aa42..c8f68a6a5627 100644
--- a/test-apps/imjs-importer/package.json
+++ b/test-apps/imjs-importer/package.json
@@ -40,7 +40,7 @@
     "@types/yargs": "^12.0.5",
     "chai": "^4.1.2",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
   },
@@ -50,4 +50,4 @@
     ],
     "extends": "plugin:@itwin/itwinjs-recommended"
   }
-}
\ No newline at end of file
+}
diff --git a/test-apps/imodel-from-geojson/package.json b/test-apps/imodel-from-geojson/package.json
index fbda453dcd96..1e4882feb2cf 100644
--- a/test-apps/imodel-from-geojson/package.json
+++ b/test-apps/imodel-from-geojson/package.json
@@ -38,4 +38,4 @@
     ],
     "extends": "plugin:@itwin/itwinjs-recommended"
   }
-}
\ No newline at end of file
+}
diff --git a/test-apps/imodel-from-orbitgt/package.json b/test-apps/imodel-from-orbitgt/package.json
index 9858635f0143..a14b409b495f 100644
--- a/test-apps/imodel-from-orbitgt/package.json
+++ b/test-apps/imodel-from-orbitgt/package.json
@@ -37,4 +37,4 @@
     ],
     "extends": "plugin:@itwin/itwinjs-recommended"
   }
-}
\ No newline at end of file
+}
diff --git a/test-apps/imodel-from-reality-model/package.json b/test-apps/imodel-from-reality-model/package.json
index a5e5f8f8b1b2..841cb6ba097b 100644
--- a/test-apps/imodel-from-reality-model/package.json
+++ b/test-apps/imodel-from-reality-model/package.json
@@ -38,4 +38,4 @@
     ],
     "extends": "plugin:@itwin/itwinjs-recommended"
   }
-}
\ No newline at end of file
+}
diff --git a/test-apps/imodel-transformer/package.json b/test-apps/imodel-transformer/package.json
index 53c9749e91dd..7f11202a728d 100644
--- a/test-apps/imodel-transformer/package.json
+++ b/test-apps/imodel-transformer/package.json
@@ -42,7 +42,7 @@
     "cross-env": "^5.1.4",
     "eslint": "^7.11.0",
     "internal-tools": "workspace:*",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
   },
diff --git a/tools/build/package.json b/tools/build/package.json
index 18d0c1931deb..7ea053e9ee5f 100644
--- a/tools/build/package.json
+++ b/tools/build/package.json
@@ -35,7 +35,7 @@
     "cross-spawn": "^7.0.1",
     "fs-extra": "^8.1.0",
     "glob": "^7.1.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "mocha-junit-reporter": "^1.16.0",
     "recursive-readdir": "^2.2.2",
     "rimraf": "^3.0.2",
diff --git a/tools/certa/package.json b/tools/certa/package.json
index 1fb97a71668c..cf720d015320 100644
--- a/tools/certa/package.json
+++ b/tools/certa/package.json
@@ -35,7 +35,7 @@
     "express": "^4.16.3",
     "jsonc-parser": "~2.0.3",
     "lodash": "^4.17.10",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "puppeteer": "chrome-86",
     "source-map-support": "^0.5.6",
     "uuid": "^7.0.3",
diff --git a/tools/certa/src/runners/chrome/MochaSerializer.ts b/tools/certa/src/runners/chrome/MochaSerializer.ts
index 963fd76476a9..210dbb5dc6fc 100644
--- a/tools/certa/src/runners/chrome/MochaSerializer.ts
+++ b/tools/certa/src/runners/chrome/MochaSerializer.ts
@@ -24,7 +24,14 @@ class MochaSerializer {
 
   public static createHandle(raw: MochaObj, isPrimary: boolean) {
     let $$index = this._registry.indexOf(raw);
-    const $$typeName = raw.constructor.name;
+    // Browser side of mocha is webpacked so the constructor name has an added suffix for example `Test` is converted into `Test$4`.
+    // This is not the case is node side of mocha, so an error is thrown because of this mismatch. The `.replace()` is there to strip that suffix
+    let $$typeName: string;
+    if (raw instanceof Mocha.Suite) $$typeName = "Suite";
+    else if (raw instanceof Mocha.Test) $$typeName = "Test";
+    else if (raw instanceof Mocha.Hook) $$typeName = "Hook";
+    else throw new Error("Unexpected instance of Mocha");
+
     if ($$index < 0) {
       $$index = this._registry.push(raw) - 1;
       // This is a new instance, so we also need to include its properties
diff --git a/tools/ecschema2ts/package.json b/tools/ecschema2ts/package.json
index 683d1d25a512..7aea7a1c3675 100644
--- a/tools/ecschema2ts/package.json
+++ b/tools/ecschema2ts/package.json
@@ -47,7 +47,7 @@
     "chai-string": "^1.5.0",
     "cpx2": "^3.0.0",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "rimraf": "^3.0.2",
     "source-map-support": "^0.5.6",
diff --git a/tools/eslint-plugin/package.json b/tools/eslint-plugin/package.json
index 766852cd7775..ac9f74b1f258 100644
--- a/tools/eslint-plugin/package.json
+++ b/tools/eslint-plugin/package.json
@@ -51,7 +51,7 @@
     "@types/node": "14.14.31",
     "@typescript-eslint/typescript-estree": "~4.31.0",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "typescript": "~4.4.0"
   }
 }
diff --git a/tools/internal/package.json b/tools/internal/package.json
index 8c6a17864989..9567a2817ea1 100644
--- a/tools/internal/package.json
+++ b/tools/internal/package.json
@@ -25,6 +25,6 @@
   },
   "devDependencies": {
     "@itwin/build-tools": "workspace:*",
-    "mocha": "^8.3.2"
+    "mocha": "^10.0.0"
   }
-}
\ No newline at end of file
+}
diff --git a/tools/webpack-core/package.json b/tools/webpack-core/package.json
index 93eeef089bb1..5b28e6388bc9 100644
--- a/tools/webpack-core/package.json
+++ b/tools/webpack-core/package.json
@@ -56,7 +56,7 @@
     "typescript": "~4.4.0",
     "webpack": "4.42.0",
     "cpx2": "^3.0.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "chai": "^4.1.2",
     "chai-as-promised": "^7",
diff --git a/ui/appui-abstract/package.json b/ui/appui-abstract/package.json
index a80af3a243b8..22cd4712ef8d 100644
--- a/ui/appui-abstract/package.json
+++ b/ui/appui-abstract/package.json
@@ -63,7 +63,7 @@
     "ignore-styles": "^5.0.1",
     "jsdom": "^19.0.0",
     "jsdom-global": "3.0.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "raf": "^3.4.0",
     "rimraf": "^3.0.2",
diff --git a/ui/appui-layout-react/package.json b/ui/appui-layout-react/package.json
index e14fc335f397..8913e6e5e59d 100644
--- a/ui/appui-layout-react/package.json
+++ b/ui/appui-layout-react/package.json
@@ -78,7 +78,7 @@
     "ignore-styles": "^5.0.1",
     "jsdom": "^19.0.0",
     "jsdom-global": "3.0.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "raf": "^3.4.0",
     "react": "^17.0.0",
diff --git a/ui/appui-react/package.json b/ui/appui-react/package.json
index f323107e4e27..942a6ded8430 100644
--- a/ui/appui-react/package.json
+++ b/ui/appui-react/package.json
@@ -109,7 +109,7 @@
     "ignore-styles": "^5.0.1",
     "jsdom": "^19.0.0",
     "jsdom-global": "3.0.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "npm-run-all": "^4.1.5",
     "nyc": "^15.1.0",
     "raf": "^3.4.0",
diff --git a/ui/components-react/package.json b/ui/components-react/package.json
index 5389e2b6c7be..7955a87d1571 100644
--- a/ui/components-react/package.json
+++ b/ui/components-react/package.json
@@ -92,7 +92,7 @@
     "ignore-styles": "^5.0.1",
     "jsdom": "^19.0.0",
     "jsdom-global": "3.0.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "raf": "^3.4.0",
     "react": "^17.0.0",
diff --git a/ui/core-react/package.json b/ui/core-react/package.json
index d881ced1ac25..a4e0c9be9a77 100644
--- a/ui/core-react/package.json
+++ b/ui/core-react/package.json
@@ -86,7 +86,7 @@
     "ignore-styles": "^5.0.1",
     "jsdom": "^19.0.0",
     "jsdom-global": "3.0.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "raf": "^3.4.0",
     "react": "^17.0.0",
diff --git a/ui/imodel-components-react/package.json b/ui/imodel-components-react/package.json
index 77bcb985adda..87640fa806bb 100644
--- a/ui/imodel-components-react/package.json
+++ b/ui/imodel-components-react/package.json
@@ -95,7 +95,7 @@
     "ignore-styles": "^5.0.1",
     "jsdom": "^19.0.0",
     "jsdom-global": "3.0.2",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.1.0",
     "raf": "^3.4.0",
     "react": "^17.0.0",
diff --git a/utils/workspace-editor/package.json b/utils/workspace-editor/package.json
index 90e7c3e58f12..e007929365a7 100644
--- a/utils/workspace-editor/package.json
+++ b/utils/workspace-editor/package.json
@@ -36,7 +36,7 @@
     "@types/yargs": "^12.0.5",
     "@types/glob": "^5.0.35",
     "eslint": "^7.11.0",
-    "mocha": "^8.3.2",
+    "mocha": "^10.0.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.4.0"
   },