diff --git a/javascript/package-lock.json b/javascript/package-lock.json
index ca205dc..c5b535b 100644
--- a/javascript/package-lock.json
+++ b/javascript/package-lock.json
@@ -40,7 +40,7 @@
         "mocha": "^11.0.0",
         "prettier": "3.6.2",
         "ts-node": "^10.9.1",
-        "typescript": "5.8.3"
+        "typescript": "5.9.2"
       },
       "peerDependencies": {
         "@cucumber/messages": "*"
@@ -4866,9 +4866,9 @@
       }
     },
     "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": "5.9.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.2.tgz",
+      "integrity": "sha512-CWBzXQrc/qOkhidw1OzBTQuYRbfyxDXJMVJ1XNwUHGROVmuaeiEm3OslpZ1RV96d7SKKjZKrSJu3+t/xlw3R9A==",
       "dev": true,
       "license": "Apache-2.0",
       "bin": {
diff --git a/javascript/package.json b/javascript/package.json
index 8a6dcc3..9a64ee8 100644
--- a/javascript/package.json
+++ b/javascript/package.json
@@ -56,6 +56,6 @@
     "mocha": "^11.0.0",
     "prettier": "3.6.2",
     "ts-node": "^10.9.1",
-    "typescript": "5.8.3"
+    "typescript": "5.9.2"
   }
 }