diff --git a/package-lock.json b/package-lock.json
index 3cf49a7..77d6d5f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -31,7 +31,7 @@
                 "dprint": "0.50.2",
                 "eslint": "9.37.0",
                 "sinon": "21.0.0",
-                "typescript": "5.8.3",
+                "typescript": "5.9.3",
                 "zod": "4.1.12"
             },
             "engines": {
@@ -7425,9 +7425,9 @@
             }
         },
         "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 e43eac9..d91d46c 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
         "dprint": "0.50.2",
         "eslint": "9.37.0",
         "sinon": "21.0.0",
-        "typescript": "5.8.3",
+        "typescript": "5.9.3",
         "zod": "4.1.12"
     },
     "engines": {