diff --git a/tfw/components/terminal/terminado_mini_server.py b/tfw/components/terminal/terminado_mini_server.py
index dd43ced..cb08202 100644
--- a/tfw/components/terminal/terminado_mini_server.py
+++ b/tfw/components/terminal/terminado_mini_server.py
@@ -17,7 +17,7 @@ class TerminadoMiniServer:
             url,
             TerminadoMiniServer.ResetterTermSocket,
             {'term_manager': self._term_manager}
-        )])
+        )], websocket_ping_interval=30)
 
     @property
     def term_manager(self):
diff --git a/tfw/main/tfw_server.py b/tfw/main/tfw_server.py
index 8c64a8e..c3ae682 100644
--- a/tfw/main/tfw_server.py
+++ b/tfw/main/tfw_server.py
@@ -28,7 +28,7 @@ class TFWServer:
             r'/ws', ZMQWebSocketRouter, {
                 'listener': self._listener,
             }
-        )])
+        )], websocket_ping_interval=30)
 
     def listen(self):
         self.application.listen(TFWENV.WEB_PORT)