diff --git a/src/plugins/contracts/extension-runtime-dependencies.contract.test.ts b/src/plugins/contracts/extension-runtime-dependencies.contract.test.ts
index 6b72d231ccf..193db8198f9 100644
--- a/src/plugins/contracts/extension-runtime-dependencies.contract.test.ts
+++ b/src/plugins/contracts/extension-runtime-dependencies.contract.test.ts
@@ -15,6 +15,11 @@ const OPTIONAL_UNDECLARED_RUNTIME_IMPORTS = new Map<string, Set<string>>([
   ],
 ]);
 const INDIRECT_RUNTIME_DEPENDENCIES = new Map<string, Set<string>>([
+  [
+    "extensions/browser",
+    // The MCP SDK loads zod through its server/zod-compat runtime path.
+    new Set(["zod"]),
+  ],
   [
     "extensions/whatsapp",
     // Baileys loads jimp as an optional peer when it needs media thumbnails.