diff --git a/src/microsoft-learn-mock/package-lock.json b/src/microsoft-learn-mock/package-lock.json
index 7eb33b204..4acd846c7 100644
--- a/src/microsoft-learn-mock/package-lock.json
+++ b/src/microsoft-learn-mock/package-lock.json
@@ -14,7 +14,7 @@
         "http-server": "14.1.1",
         "rollup": "2.75.6",
         "rollup-plugin-typescript2": "^0.36.0",
-        "typescript": "^5.8.3"
+        "typescript": "^5.9.3"
       }
     },
     "node_modules/@rollup/plugin-commonjs": {
@@ -1164,9 +1164,9 @@
       "dev": true
     },
     "node_modules/typescript": {
-      "version": "5.8.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.8.3.tgz",
-      "integrity": "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==",
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
@@ -2053,9 +2053,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "5.8.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.8.3.tgz",
-      "integrity": "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==",
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "dev": true
     },
     "union": {
diff --git a/src/microsoft-learn-mock/package.json b/src/microsoft-learn-mock/package.json
index 933d23743..d2c3a8bb5 100644
--- a/src/microsoft-learn-mock/package.json
+++ b/src/microsoft-learn-mock/package.json
@@ -17,6 +17,6 @@
     "http-server": "14.1.1",
     "rollup": "2.75.6",
     "rollup-plugin-typescript2": "^0.36.0",
-    "typescript": "^5.8.3"
+    "typescript": "^5.9.3"
   }
 }