diff --git a/samples/adk-sql-agent/requirements.txt b/samples/adk-sql-agent/requirements.txt
index ac2f409b..dba0acd1 100644
--- a/samples/adk-sql-agent/requirements.txt
+++ b/samples/adk-sql-agent/requirements.txt
@@ -824,9 +824,9 @@ markupsafe==3.0.3 \
     --hash=sha256:f3e98bb3798ead92273dc0e5fd0f31ade220f59a266ffd8a4f6065e0a3ce0523 \
     --hash=sha256:fed51ac40f757d41b7c48425901843666a6677e3e8eb0abcff09e4ba6e664f50
     # via mako
-mcp==1.27.0 \
-    --hash=sha256:5ce1fa81614958e267b21fb2aa34e0aea8e2c6ede60d52aba45fd47246b4d741 \
-    --hash=sha256:d3dc35a7eec0d458c1da4976a48f982097ddaab87e278c5511d5a4a56e852b83
+mcp==1.28.1 \
+    --hash=sha256:2726bca5e7193f61c5dde8b12500a6de2d9acf6d1a1c0be9e8c2e706437991df \
+    --hash=sha256:d51e36a5f5644faea4f85ea649bfffa6bc6c26770d42798ad6a3de3d2ba69683
     # via google-adk
 mmh3==5.2.1 \
     --hash=sha256:022aa1a528604e6c83d0a7705fdef0b5355d897a9e0fa3a8d26709ceaa06965d \