diff --git a/services/mcps/oap-aws-mcp/requirements.txt b/services/mcps/oap-aws-mcp/requirements.txt
index e3619e792..629b461b9 100644
--- a/services/mcps/oap-aws-mcp/requirements.txt
+++ b/services/mcps/oap-aws-mcp/requirements.txt
@@ -1,6 +1,6 @@
 # Phase 1.6 standardization: pin to current stable.
 mcp>=1.27.0,<2.0.0
-fastmcp>=3.2.0,<4.0.0
+fastmcp>=3.4.3,<4.0.0
 boto3>=1.34.0
 botocore>=1.34.0
 python-dotenv>=1.0.0