diff --git a/constraints/py313-mcp.txt b/constraints/py313-mcp.txt
index f605b1a7..6795b3c0 100644
--- a/constraints/py313-mcp.txt
+++ b/constraints/py313-mcp.txt
@@ -11,7 +11,7 @@ jsonschema==4.26.0
 pydantic==2.13.4
 pydantic-settings==2.14.0
 python-multipart==0.0.29
-sse-starlette==3.4.1
+sse-starlette==3.4.4
 starlette==1.0.0
 typer==0.25.1
 uvicorn==0.47.0