diff --git a/docker-compose.yml b/docker-compose.yml
index 7a4d7ec..1d32b83 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -49,7 +49,7 @@ services:
       - "traefik.http.middlewares.ospp_cloud_im.headers.contentSecurityPolicy=upgrade-insecure-requests"
       - "traefik.http.middlewares.ospp_cloud_im.headers.customResponseHeaders.Content-Security-Policy=upgrade-insecure-requests"
       - "traefik.http.middlewares.ospp_cloud_im.headers.customResponseHeaders.Content-Security-Policy-Report-Only=upgrade-insecure-requests"
-      - "traefik.http.middlewares.ospp_cloud_im.headers.customrequestheaders.Upgrade=websocket"
+      - "traefik.http.middlewares.ospp_cloud_im.headers.customrequestheaders.Upgrade=websocket,keep-alive"
       - "traefik.http.middlewares.ospp_cloud_im.headers.customrequestheaders.Connection=upgrade"
       - "traefik.http.middlewares.ospp_cloud_im.headers.customrequestheaders.Sec-WebSocket-Version=13"
       - "traefik.http.middlewares.ospp_cloud_im.headers.customrequestheaders.X-Forwarded-Proto=https,wss"