diff --git a/backend/requirements.txt b/backend/requirements.txt
index f1ee8d1..dc8f78e 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -16,4 +16,4 @@ pytest>=8.0.0
 pytest-asyncio>=0.23.0
 pytest-cov>=5.0.0
 httpx>=0.27.0
-mcp>=1.0.0
+mcp>=1.0.0,<2