diff --git a/pyproject.toml b/pyproject.toml
index c6de81e..ea7f2fe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -86,7 +86,7 @@ cli = [
 mcp = [
     "fastmcp>=2.0.0,<3.0.0",  # MCP server framework
     "uvicorn>=0.23.0,<1.0.0",  # ASGI server for MCP
-    "sse-starlette>=1.6.0,<2.0.0",  # Server-Sent Events support
+    "sse-starlette>=1.6.0,<4.0.0",  # Server-Sent Events support
 ]
 
 # 모든 Provider 사용