diff --git a/package.json b/package.json
index d52fdd7..9bfc327 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
   "packageManager": "pnpm@10.8.1",
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.28.0",
-    "hono": "^4.12.9",
+    "hono": "^4.12.12",
     "zod": "^4.3.6",
     "zod-to-json-schema": "^3.25.2"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 0b8a030..9258007 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -21,7 +21,7 @@ importers:
         version: 1.28.0(zod@4.3.6)
       hono:
         specifier: '>=4.11.4'
-        version: 4.12.9
+        version: 4.12.12
       zod:
         specifier: ^4.3.6
         version: 4.3.6
@@ -1077,8 +1077,8 @@ packages:
     resolution: {integrity: sha512-0hJU9SCPvmMzIBdZFqNPXWa6dqh7WdH0cII9y+CyS8rG3nL48Bclra9HmKhVVUHyPWNH5Y7xDwAB7bfgSjkUMQ==}
     engines: {node: '>= 0.4'}
 
-  hono@4.12.9:
-    resolution: {integrity: sha512-wy3T8Zm2bsEvxKZM5w21VdHDDcwVS1yUFFY6i8UobSsKfFceT7TOwhbhfKsDyx7tYQlmRM5FLpIuYvNFyjctiA==}
+  hono@4.12.12:
+    resolution: {integrity: sha512-p1JfQMKaceuCbpJKAPKVqyqviZdS0eUxH9v82oWo1kb9xjQ5wA6iP3FNVAPDFlz5/p7d45lO+BpSk1tuSZMF4Q==}
     engines: {node: '>=16.9.0'}
 
   html-escaper@2.0.2:
@@ -1879,9 +1879,9 @@ snapshots:
       '@eslint/core': 0.17.0
       levn: 0.4.1
 
-  '@hono/node-server@1.19.12(hono@4.12.9)':
+  '@hono/node-server@1.19.12(hono@4.12.12)':
     dependencies:
-      hono: 4.12.9
+      hono: 4.12.12
 
   '@humanfs/core@0.19.1': {}
 
@@ -1905,7 +1905,7 @@ snapshots:
 
   '@modelcontextprotocol/sdk@1.28.0(zod@4.3.6)':
     dependencies:
-      '@hono/node-server': 1.19.12(hono@4.12.9)
+      '@hono/node-server': 1.19.12(hono@4.12.12)
       ajv: 6.14.0
       ajv-formats: 3.0.1(ajv@6.14.0)
       content-type: 1.0.5
@@ -1915,7 +1915,7 @@ snapshots:
       eventsource-parser: 3.0.6
       express: 5.2.1
       express-rate-limit: 8.3.1(express@5.2.1)
-      hono: 4.12.9
+      hono: 4.12.12
       jose: 6.2.2
       json-schema-typed: 8.0.2
       pkce-challenge: 5.0.1
@@ -2579,7 +2579,7 @@ snapshots:
     dependencies:
       function-bind: 1.1.2
 
-  hono@4.12.9: {}
+  hono@4.12.12: {}
 
   html-escaper@2.0.2: {}