diff --git a/package-lock.json b/package-lock.json
index d0b7520..53b2d6f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1828,9 +1828,9 @@
       }
     },
     "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": {
@@ -2010,7 +2010,7 @@
       "devDependencies": {
         "@types/node": "24.2.1",
         "rimraf": "6.0.1",
-        "typescript": "5.8.3"
+        "typescript": "5.9.2"
       }
     },
     "packages/acn/node_modules/brace-expansion": {
diff --git a/packages/acn/package.json b/packages/acn/package.json
index c92e58f..8d2bbac 100644
--- a/packages/acn/package.json
+++ b/packages/acn/package.json
@@ -38,6 +38,6 @@
   "devDependencies": {
     "@types/node": "24.2.1",
     "rimraf": "6.0.1",
-    "typescript": "5.8.3"
+    "typescript": "5.9.2"
   }
 }