diff --git a/package-lock.json b/package-lock.json
index d36a6e1b..f10f03aa 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -29,7 +29,7 @@
         "eslint-plugin-mocha": "5.3.0",
         "node-static": "^0.7.11",
         "npm-run-all": "4.1.5",
-        "typescript": "5.5.4"
+        "typescript": "5.9.3"
       }
     },
     "node_modules/@aashutoshrathi/word-wrap": {
@@ -4919,9 +4919,9 @@
       "dev": true
     },
     "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,
       "bin": {
         "tsc": "bin/tsc",
@@ -9085,9 +9085,9 @@
       "dev": true
     },
     "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
     },
     "umd": {
diff --git a/package.json b/package.json
index 8050eb52..b5f7356e 100644
--- a/package.json
+++ b/package.json
@@ -47,6 +47,6 @@
     "eslint-plugin-mocha": "5.3.0",
     "node-static": "^0.7.11",
     "npm-run-all": "4.1.5",
-    "typescript": "5.5.4"
+    "typescript": "5.9.3"
   }
 }