diff --git a/package-lock.json b/package-lock.json
index 59afb978e3e..29cf21875ce 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -225,7 +225,7 @@
                 "tsconfig-paths-webpack-plugin": "^3.2.0",
                 "tsx": "^3.13.0",
                 "typemoq": "^2.1.0",
-                "typescript": "^5.3.3",
+                "typescript": "^5.4.5",
                 "unicode-properties": "^1.3.1",
                 "utf-8-validate": "^5.0.8",
                 "util": "^0.12.4",
@@ -21632,9 +21632,9 @@
             }
         },
         "node_modules/typescript": {
-            "version": "5.3.3",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.3.3.tgz",
-            "integrity": "sha512-pXWcraxM0uxAS+tN0AG/BF2TyqmHO014Z070UsJ+pFvYuRSq8KH8DmWpnbXe0pEPDHXZV3FcAbJkijJ5oNEnWw==",
+            "version": "5.4.5",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.4.5.tgz",
+            "integrity": "sha512-vcI4UpRgg81oIRUFwR0WSIHKt11nJ7SAVlYNIu+QpqeyXP+gpQJy/Z4+F0aGxSE4MqwjyXvW/TzgkLAx2AGHwQ==",
             "dev": true,
             "bin": {
                 "tsc": "bin/tsc",
@@ -39189,9 +39189,9 @@
             }
         },
         "typescript": {
-            "version": "5.3.3",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.3.3.tgz",
-            "integrity": "sha512-pXWcraxM0uxAS+tN0AG/BF2TyqmHO014Z070UsJ+pFvYuRSq8KH8DmWpnbXe0pEPDHXZV3FcAbJkijJ5oNEnWw==",
+            "version": "5.4.5",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.4.5.tgz",
+            "integrity": "sha512-vcI4UpRgg81oIRUFwR0WSIHKt11nJ7SAVlYNIu+QpqeyXP+gpQJy/Z4+F0aGxSE4MqwjyXvW/TzgkLAx2AGHwQ==",
             "dev": true
         },
         "uint64be": {
diff --git a/package.json b/package.json
index d163e45fd49..0425e27243c 100644
--- a/package.json
+++ b/package.json
@@ -2353,7 +2353,7 @@
         "tsconfig-paths-webpack-plugin": "^3.2.0",
         "tsx": "^3.13.0",
         "typemoq": "^2.1.0",
-        "typescript": "^5.3.3",
+        "typescript": "^5.4.5",
         "unicode-properties": "^1.3.1",
         "utf-8-validate": "^5.0.8",
         "util": "^0.12.4",
diff --git a/src/test/datascience/reactHelpers.ts b/src/test/datascience/reactHelpers.ts
index 59fe2550951..ceef3dff500 100644
--- a/src/test/datascience/reactHelpers.ts
+++ b/src/test/datascience/reactHelpers.ts
@@ -56,6 +56,11 @@ import { DOMWindow, JSDOM } from 'jsdom';
 import { noop } from '../../platform/common/utils/misc';
 
 class MockCanvas implements CanvasRenderingContext2D {
+    fontStretch: CanvasFontStretch;
+    fontVariantCaps: CanvasFontVariantCaps;
+    letterSpacing: string;
+    textRendering: CanvasTextRendering;
+    wordSpacing: string;
     roundRect(
         _x: number,
         _y: number,