diff --git a/sanic/server.py b/sanic/server.py
index 0efcfd05..d50842b9 100644
--- a/sanic/server.py
+++ b/sanic/server.py
@@ -635,7 +635,9 @@ def serve(host, port, request_handler, error_handler, before_start=None,
         coros = []
         for conn in connections:
             if hasattr(conn, "websocket") and conn.websocket:
-                coros.append(conn.websocket.close_connection(after_handshake=True))
+                coros.append(
+                    conn.websocket.close_connection(after_handshake=True)
+                )
             else:
                 conn.close()
 
diff --git a/sanic/worker.py b/sanic/worker.py
index 6de18159..3d8a4617 100644
--- a/sanic/worker.py
+++ b/sanic/worker.py
@@ -115,7 +115,9 @@ class GunicornWorker(base.Worker):
             coros = []
             for conn in self.connections:
                 if hasattr(conn, "websocket") and conn.websocket:
-                    coros.append(conn.websocket.close_connection(after_handshake=False))
+                    coros.append(
+                        conn.websocket.close_connection(after_handshake=False)
+                    )
                 else:
                     conn.close()
             _shutdown = asyncio.gather(*coros, loop=self.loop)