diff --git a/package-lock.json b/package-lock.json
index a927c9ea7..7876bc06c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -67,7 +67,7 @@
         "ts-mocha": "^11.1.0",
         "ts-node": "=10.9.2",
         "tsconfig-paths": "^4.2.0",
-        "typescript": "=5.5.4",
+        "typescript": "=5.9.3",
         "webpack": "=5.99.9",
         "webpack-cli": "=6.0.1"
       },
@@ -24556,9 +24556,9 @@
       }
     },
     "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": {
diff --git a/package.json b/package.json
index 9b1bafbbf..2d56b17f4 100644
--- a/package.json
+++ b/package.json
@@ -97,7 +97,7 @@
     "sinon": "=20.0.0",
     "terser-webpack-plugin": "=5.3.14",
     "ts-node": "=10.9.2",
-    "typescript": "=5.5.4",
+    "typescript": "=5.9.3",
     "webpack": "=5.99.9",
     "webpack-cli": "=6.0.1",
     "@types/expect": "^1.20.4",