diff --git a/package-lock.json b/package-lock.json
index 5fa5029f9..be5a7aadf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
       },
       "devDependencies": {
         "@eslint/js": "^9.35.0",
-        "@modelcontextprotocol/sdk": "1.21.0",
+        "@modelcontextprotocol/sdk": "1.21.1",
         "@rollup/plugin-commonjs": "^29.0.0",
         "@rollup/plugin-json": "^6.1.0",
         "@rollup/plugin-node-resolve": "^16.0.3",
@@ -380,9 +380,9 @@
       "license": "MIT"
     },
     "node_modules/@modelcontextprotocol/sdk": {
-      "version": "1.21.0",
-      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.21.0.tgz",
-      "integrity": "sha512-YFBsXJMFCyI1zP98u7gezMFKX4lgu/XpoZJk7ufI6UlFKXLj2hAMUuRlQX/nrmIPOmhRrG6tw2OQ2ZA/ZlXYpQ==",
+      "version": "1.21.1",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.21.1.tgz",
+      "integrity": "sha512-UyLFcJLDvUuZbGnaQqXFT32CpPpGj7VS19roLut6gkQVhb439xUzYWbsUvdI3ZPL+2hnFosuugtYWE0Mcs1rmQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index 04b4987bf..68d0996d0 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
   "mcpName": "io.github.ChromeDevTools/chrome-devtools-mcp",
   "devDependencies": {
     "@eslint/js": "^9.35.0",
-    "@modelcontextprotocol/sdk": "1.21.0",
+    "@modelcontextprotocol/sdk": "1.21.1",
     "@rollup/plugin-commonjs": "^29.0.0",
     "@rollup/plugin-json": "^6.1.0",
     "@rollup/plugin-node-resolve": "^16.0.3",