diff --git a/package-lock.json b/package-lock.json
index e41e9c0..390b87a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,7 +15,7 @@
       "devDependencies": {
         "@types/node": "^22.5.0",
         "@types/semver": "^7.5.8",
-        "typescript": "^5.5.4"
+        "typescript": "^5.9.3"
       }
     },
     "node_modules/@actions/core": {
@@ -527,10 +527,11 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.5.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.5.4.tgz",
-      "integrity": "sha512-Mtq29sKDAEYP7aljRgtPOpTvOfbwRWlS6dPRzwjdE+C0R4brX/GUyhHSecbHMFLNBLcJIPt9nl9yG5TZ1weH+Q==",
+      "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"
diff --git a/package.json b/package.json
index 631ff9c..0167fec 100644
--- a/package.json
+++ b/package.json
@@ -26,6 +26,6 @@
   "devDependencies": {
     "@types/node": "^22.5.0",
     "@types/semver": "^7.5.8",
-    "typescript": "^5.5.4"
+    "typescript": "^5.9.3"
   }
 }