diff --git a/package-lock.json b/package-lock.json
index d87e7a35..9a2f8b23 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -46,7 +46,7 @@
         "rollup": "^4.52.4",
         "ts-patch": "^3.3.0",
         "tsx": "^4.20.6",
-        "typescript": "~5.8.3",
+        "typescript": "~5.9.3",
         "typia": "^10.0.2",
         "vite": "^7.2.4",
         "vitest": "^4.0.12"
@@ -8325,9 +8325,9 @@
       "license": "MIT"
     },
     "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==",
       "devOptional": true,
       "license": "Apache-2.0",
       "bin": {
diff --git a/package.json b/package.json
index fa563a6f..1af28bc6 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "rollup": "^4.52.4",
     "ts-patch": "^3.3.0",
     "tsx": "^4.20.6",
-    "typescript": "~5.8.3",
+    "typescript": "~5.9.3",
     "typia": "^10.0.2",
     "vite": "^7.2.4",
     "vitest": "^4.0.12"