diff --git a/package.json b/package.json
index a0da48f..85906e0 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "@cloudflare/workers-types": "4.20250821.0",
     "@types/react": "19.1.8",
     "@types/react-dom": "19.1.6",
-    "typescript": "5.8.3",
+    "typescript": "5.9.3",
     "wrangler": "4.31.0"
   },
   "packageManager": "pnpm@10.13.1"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 302d60c..78985ca 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -34,8 +34,8 @@ importers:
         specifier: 19.1.6
         version: 19.1.6(@types/react@19.1.8)
       typescript:
-        specifier: 5.8.3
-        version: 5.8.3
+        specifier: 5.9.3
+        version: 5.9.3
       wrangler:
         specifier: 4.31.0
         version: 4.31.0(@cloudflare/workers-types@4.20250821.0)
@@ -763,8 +763,8 @@ packages:
   tslib@2.8.1:
     resolution: {integrity: sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==}
 
-  typescript@5.8.3:
-    resolution: {integrity: sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==}
+  typescript@5.9.3:
+    resolution: {integrity: sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==}
     engines: {node: '>=14.17'}
     hasBin: true
 
@@ -1405,7 +1405,7 @@ snapshots:
   tslib@2.8.1:
     optional: true
 
-  typescript@5.8.3: {}
+  typescript@5.9.3: {}
 
   ufo@1.6.1: {}