diff --git a/x-pack/plugins/upgrade_assistant/server/lib/es_version_precheck.test.ts b/x-pack/plugins/upgrade_assistant/server/lib/es_version_precheck.test.ts
index 74ec268d71e84..9cdc3bf1938c4 100644
--- a/x-pack/plugins/upgrade_assistant/server/lib/es_version_precheck.test.ts
+++ b/x-pack/plugins/upgrade_assistant/server/lib/es_version_precheck.test.ts
@@ -6,7 +6,8 @@
 
 import { SemVer } from 'semver';
 import { IScopedClusterClient, kibanaResponseFactory } from 'src/core/server';
-import { xpackMocks } from '../../../../mocks';
+import { coreMock } from 'src/core/server/mocks';
+import { licensingMock } from '../../../../plugins/licensing/server/mocks';
 import { MOCK_VERSION_STRING, getMockVersionInfo } from './__fixtures__/version';
 
 import {
@@ -18,6 +19,18 @@ import { versionService } from './version';
 
 const { currentMajor, currentVersion } = getMockVersionInfo();
 
+// Re-implement the mock that was imported directly from `x-pack/mocks`
+function createCoreRequestHandlerContextMock() {
+  return {
+    core: coreMock.createRequestHandlerContext(),
+    licensing: licensingMock.createRequestHandlerContext(),
+  };
+}
+
+const xpackMocks = {
+  createRequestHandlerContext: createCoreRequestHandlerContextMock,
+};
+
 describe('getAllNodeVersions', () => {
   it('returns a list of unique node versions', async () => {
     const adminClient = ({
diff --git a/x-pack/plugins/upgrade_assistant/tsconfig.json b/x-pack/plugins/upgrade_assistant/tsconfig.json
new file mode 100644
index 0000000000000..2f6bdd371ad0d
--- /dev/null
+++ b/x-pack/plugins/upgrade_assistant/tsconfig.json
@@ -0,0 +1,27 @@
+{
+  "extends": "../../../tsconfig.base.json",
+  "compilerOptions": {
+    "composite": true,
+    "outDir": "./target/types",
+    "emitDeclarationOnly": true,
+    "declaration": true,
+    "declarationMap": true
+  },
+  "include": [
+    "common/**/*",
+    "public/**/*",
+    "server/**/*",
+    // have to declare *.json explicitly due to https://github.com/microsoft/TypeScript/issues/25636
+    "public/**/*.json",
+    "server/**/*.json"
+  ],
+  "references": [
+    { "path": "../../../src/core/tsconfig.json" },
+    { "path": "../../../src/plugins/management/tsconfig.json" },
+    { "path": "../../../src/plugins/usage_collection/tsconfig.json" },
+    { "path": "../../../src/plugins/apm_oss/tsconfig.json"},
+    { "path": "../cloud/tsconfig.json" },
+    { "path": "../features/tsconfig.json" },
+    { "path": "../licensing/tsconfig.json" },
+  ]
+}
diff --git a/x-pack/test/tsconfig.json b/x-pack/test/tsconfig.json
index cc33ef74b8af7..a39ec8f7ce009 100644
--- a/x-pack/test/tsconfig.json
+++ b/x-pack/test/tsconfig.json
@@ -71,6 +71,7 @@
     { "path": "../plugins/snapshot_restore/tsconfig.json" },
     { "path": "../plugins/grokdebugger/tsconfig.json" },
     { "path": "../plugins/painless_lab/tsconfig.json" },
+    { "path": "../plugins/upgrade_assistant/tsconfig.json" },
     { "path": "../plugins/watcher/tsconfig.json" },
     { "path": "../plugins/runtime_fields/tsconfig.json" },
     { "path": "../plugins/index_management/tsconfig.json" }
diff --git a/x-pack/tsconfig.json b/x-pack/tsconfig.json
index 360583853f3ae..093b66d6dc6cb 100644
--- a/x-pack/tsconfig.json
+++ b/x-pack/tsconfig.json
@@ -52,6 +52,7 @@
     "plugins/runtime_fields/**/*",
     "plugins/index_management/**/*",
     "plugins/grokdebugger/**/*",
+    "plugins/upgrade_assistant/**/*",
     "test/**/*"
   ],
   "compilerOptions": {
@@ -135,6 +136,7 @@
     { "path": "./plugins/translations/tsconfig.json" },
     { "path": "./plugins/triggers_actions_ui/tsconfig.json" },
     { "path": "./plugins/ui_actions_enhanced/tsconfig.json" },
+    { "path": "./plugins/upgrade_assistant/tsconfig.json" },
     { "path": "./plugins/runtime_fields/tsconfig.json" },
     { "path": "./plugins/index_management/tsconfig.json" },
     { "path": "./plugins/watcher/tsconfig.json" }
diff --git a/x-pack/tsconfig.refs.json b/x-pack/tsconfig.refs.json
index e5cf50500ae86..dd6d8a01bf88d 100644
--- a/x-pack/tsconfig.refs.json
+++ b/x-pack/tsconfig.refs.json
@@ -44,6 +44,7 @@
     { "path": "./plugins/translations/tsconfig.json" },
     { "path": "./plugins/triggers_actions_ui/tsconfig.json" },
     { "path": "./plugins/ui_actions_enhanced/tsconfig.json" },
+    { "path": "./plugins/upgrade_assistant/tsconfig.json" },
     { "path": "./plugins/runtime_fields/tsconfig.json" },
     { "path": "./plugins/index_management/tsconfig.json" },
     { "path": "./plugins/watcher/tsconfig.json" }