diff --git a/src/WebAppDIRAC/Core/App.py b/src/WebAppDIRAC/Core/App.py
index 4f7377cd..cd746a2f 100644
--- a/src/WebAppDIRAC/Core/App.py
+++ b/src/WebAppDIRAC/Core/App.py
@@ -104,6 +104,7 @@ def bootstrap(self):
             cookie_secret=str(Conf.cookieSecret()),
             log_function=self._logRequest,
             autoreload=autoreload,
+            websocket_ping_interval=15,
         )
 
         # please do no move this lines. The lines must be before the fork_processes