diff --git a/package-lock.json b/package-lock.json
index eb69c35..ae1a28f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,7 @@
                 "gulp-typescript": "^6.0.0-alpha.1",
                 "mocha": "^11.7.5",
                 "sinon": "^4.1.3",
-                "typescript": "^5.1.3"
+                "typescript": "^5.9.3"
             }
         },
         "node_modules/@actions/core": {
@@ -3841,9 +3841,10 @@
             "license": "MIT"
         },
         "node_modules/typescript": {
-            "version": "5.2.2",
+            "version": "5.9.3",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+            "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
             "dev": true,
-            "license": "Apache-2.0",
             "bin": {
                 "tsc": "bin/tsc",
                 "tsserver": "bin/tsserver"
@@ -6808,7 +6809,9 @@
             "dev": true
         },
         "typescript": {
-            "version": "5.2.2",
+            "version": "5.9.3",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+            "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
             "dev": true
         },
         "unc-path-regex": {
diff --git a/package.json b/package.json
index 7f43ea2..6897f62 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,6 @@
         "gulp-typescript": "^6.0.0-alpha.1",
         "mocha": "^11.7.5",
         "sinon": "^4.1.3",
-        "typescript": "^5.1.3"
+        "typescript": "^5.9.3"
     }
 }