diff --git a/mcp/package-lock.json b/mcp/package-lock.json
index 70a31a3e..fb262adc 100644
--- a/mcp/package-lock.json
+++ b/mcp/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.1.0",
       "license": "MIT",
       "devDependencies": {
-        "@cloudflare/workers-types": "^4.20260608.1",
+        "@cloudflare/workers-types": "^4.20260621.1",
         "typescript": "^6.0.3",
         "wrangler": "^4.100.0",
         "yaml": "^2.6.0"
@@ -127,9 +127,9 @@
       }
     },
     "node_modules/@cloudflare/workers-types": {
-      "version": "4.20260615.1",
-      "resolved": "https://registry.npmjs.org/@cloudflare/workers-types/-/workers-types-4.20260615.1.tgz",
-      "integrity": "sha512-fGOiTwoLj/8bU8mj3VAfa1EULx4ceZhDwnjvY+afDBlSXI9pvY7PE9t62rGEhJjbAOGd7i5WUDun0eZCWBDrzg==",
+      "version": "4.20260621.1",
+      "resolved": "https://registry.npmjs.org/@cloudflare/workers-types/-/workers-types-4.20260621.1.tgz",
+      "integrity": "sha512-c4xrf4shZdDOK1ihh1UKzlS/3MDYiGThT/Oqr4Y3qR9NLCSNzHB7rt+Vk/LOp0ZSNjA+7WNJEQsOhpiQtpT2GA==",
       "dev": true,
       "license": "MIT OR Apache-2.0"
     },
diff --git a/mcp/package.json b/mcp/package.json
index 132d10fd..62d5d826 100644
--- a/mcp/package.json
+++ b/mcp/package.json
@@ -14,7 +14,7 @@
     "typecheck": "tsc --noEmit"
   },
   "devDependencies": {
-    "@cloudflare/workers-types": "^4.20260608.1",
+    "@cloudflare/workers-types": "^4.20260621.1",
     "typescript": "^6.0.3",
     "wrangler": "^4.100.0",
     "yaml": "^2.6.0"