diff --git a/node/chat/gen-ai-apps/4-mcp/package-lock.json b/node/chat/gen-ai-apps/4-mcp/package-lock.json
index a37b60ed..c2460b16 100644
--- a/node/chat/gen-ai-apps/4-mcp/package-lock.json
+++ b/node/chat/gen-ai-apps/4-mcp/package-lock.json
@@ -11,7 +11,7 @@
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@@ -1309,6 +1304,16 @@
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+      "peer": true,
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+    "node_modules/jose": {
+      "version": "6.1.3",
+      "resolved": "https://registry.npmjs.org/jose/-/jose-6.1.3.tgz",
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+      "license": "MIT",
+      "funding": {
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@@ -1819,15 +1839,6 @@
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diff --git a/node/chat/gen-ai-apps/4-mcp/package.json b/node/chat/gen-ai-apps/4-mcp/package.json
index 17ba2678..babd1437 100644
--- a/node/chat/gen-ai-apps/4-mcp/package.json
+++ b/node/chat/gen-ai-apps/4-mcp/package.json
@@ -10,7 +10,7 @@
   "dependencies": {
     "@google-cloud/functions-framework": "^4.0.0",
     "@google/genai": "^1.20.0",
-    "@modelcontextprotocol/sdk": "^1.18.1"
+    "@modelcontextprotocol/sdk": "^1.25.2"
   },
   "author": "Google LLC",
   "license": "Apache-2.0"