diff --git a/server/typings/ws/index.d.ts b/server/typings/ws/index.d.ts
new file mode 100644
index 000000000..536e0338f
--- /dev/null
+++ b/server/typings/ws/index.d.ts
@@ -0,0 +1,8 @@
+import { Server } from 'ws'
+
+declare module 'ws' {
+  // FIXME: remove when 'ws' is fixed
+  export class WebSocketServer extends Server {
+
+  }
+}