diff --git a/package-lock.json b/package-lock.json
index 17908c3cc..f7e2664c8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -36,7 +36,7 @@
         "mocha": "^11.7.4",
         "nyc": "^17.1.0",
         "should": "^13.2.3",
-        "typescript": "^5.8.3"
+        "typescript": "^5.9.3"
       },
       "engines": {
         "node": ">=18"
@@ -5613,9 +5613,9 @@
       }
     },
     "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,
       "license": "Apache-2.0",
       "peer": true,
diff --git a/package.json b/package.json
index 47fadb52a..9eddc46ac 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "mocha": "^11.7.4",
     "nyc": "^17.1.0",
     "should": "^13.2.3",
-    "typescript": "^5.8.3"
+    "typescript": "^5.9.3"
   },
   "dependencies": {
     "async": "^3.2.6",