diff --git a/package.json b/package.json
index 69f45569..2350615b 100644
--- a/package.json
+++ b/package.json
@@ -147,7 +147,7 @@
     "ajv": "^8.18.0",
     "concurrently": "^9.2.1",
     "fast-check": "^4.7.0",
-    "hono": "^4.12.25",
+    "hono": "^4.12.27",
     "playwright": "^1.58.2",
     "sharp": "^0.34.5",
     "tsx": "^4.22.3",
diff --git a/platforms/mcp/package.json b/platforms/mcp/package.json
index 5e725397..e740fb68 100644
--- a/platforms/mcp/package.json
+++ b/platforms/mcp/package.json
@@ -17,7 +17,7 @@
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.26.0",
-    "hono": "^4.12.25",
+    "hono": "^4.12.27",
     "zod": "^4.3.5",
     "zod-to-json-schema": "^3.25.1"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index b0b451b4..186b1f12 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -89,8 +89,8 @@ importers:
         specifier: ^4.7.0
         version: 4.7.0
       hono:
-        specifier: ^4.12.25
-        version: 4.12.25
+        specifier: ^4.12.27
+        version: 4.12.27
       playwright:
         specifier: 1.58.2
         version: 1.58.2
@@ -736,8 +736,8 @@ importers:
         specifier: ^1.26.0
         version: 1.26.0(@cfworker/json-schema@4.1.1)(zod@4.3.5)
       hono:
-        specifier: ^4.12.25
-        version: 4.12.25
+        specifier: ^4.12.27
+        version: 4.12.27
       zod:
         specifier: ^4.3.5
         version: 4.3.5
@@ -5158,8 +5158,8 @@ packages:
     resolution: {integrity: sha512-jN0ZewiNAWSe5khM3EyCmBb250+b40wWbwNILNfEvq84VREWwOIkuUsFONk/3i3nqkz7Oe1PcpM2mwQEK2L9Kg==}
     engines: {node: '>=16.9.0'}
 
-  hono@4.12.25:
-    resolution: {integrity: sha512-2NFaIyNVgJmBs/ecmtGzlmluTFs5cHEWGTdu0t1HBwYzoGXOL5nUQBRMXsXWla5i4KkG//QMzVP88m1+I3fdAQ==}
+  hono@4.12.27:
+    resolution: {integrity: sha512-1yrb/+w6HWQJrUCLkJ2IF5jNIPvvFkblV5RNOYl6bV+OA6p9GLcMpHFFGTosSvHvcAUibuUukRqhlYI4z32C7Q==}
     engines: {node: '>=16.9.0'}
 
   html-encoding-sniffer@6.0.0:
@@ -8447,9 +8447,9 @@ snapshots:
     dependencies:
       hono: 4.12.16
 
-  '@hono/node-server@2.0.3(hono@4.12.25)':
+  '@hono/node-server@2.0.3(hono@4.12.27)':
     dependencies:
-      hono: 4.12.25
+      hono: 4.12.27
 
   '@img/colour@1.0.0': {}
 
@@ -8872,7 +8872,7 @@ snapshots:
 
   '@modelcontextprotocol/sdk@1.29.0(@cfworker/json-schema@4.1.1)(zod@3.25.76)':
     dependencies:
-      '@hono/node-server': 2.0.3(hono@4.12.25)
+      '@hono/node-server': 2.0.3(hono@4.12.27)
       ajv: 8.20.0
       ajv-formats: 3.0.1
       content-type: 1.0.5
@@ -8882,7 +8882,7 @@ snapshots:
       eventsource-parser: 3.0.8
       express: 5.2.1
       express-rate-limit: 8.2.2(express@5.2.1)
-      hono: 4.12.25
+      hono: 4.12.27
       jose: 6.2.3
       json-schema-typed: 8.0.2
       pkce-challenge: 5.0.1
@@ -12061,7 +12061,7 @@ snapshots:
 
   hono@4.12.16: {}
 
-  hono@4.12.25: {}
+  hono@4.12.27: {}
 
   html-encoding-sniffer@6.0.0:
     dependencies: