diff --git a/examples/flask_chat/init_db.py b/examples/flask_chat/init_db.py
index e1915fa..9b9aba5 100644
--- a/examples/flask_chat/init_db.py
+++ b/examples/flask_chat/init_db.py
@@ -1,3 +1,10 @@
+import sys
+if 'threading' in sys.modules:
+    del sys.modules['threading']
+import gevent
+import gevent.socket
+import gevent.monkey
+gevent.monkey.patch_all()
+
 import chat
 chat.init_db()
-