diff --git a/services/hypercode-mcp-server/requirements.txt b/services/hypercode-mcp-server/requirements.txt
index 0d3af512..ccc31b36 100644
--- a/services/hypercode-mcp-server/requirements.txt
+++ b/services/hypercode-mcp-server/requirements.txt
@@ -2,6 +2,6 @@
 # rewrite: `mcp.server.fastmcp.FastMCP` / `mcp.sse_app()` (used in server.py)
 # do not exist there, so an unpinned `>=` rebuild pulls v2 and the container
 # Exits(1) on startup — the same failure class as the Sept 2026 prod outage.
-mcp[cli]>=1.28.1,<2
+mcp[cli]>=2.1.1,<3
 httpx>=0.28.0,<1
 uvicorn>=0.35.0,<1