diff --git a/IPython/frontend/html/notebook/handlers.py b/IPython/frontend/html/notebook/handlers.py
index 05a06ac..faba77d 100644
--- a/IPython/frontend/html/notebook/handlers.py
+++ b/IPython/frontend/html/notebook/handlers.py
@@ -393,6 +393,14 @@ class ZMQStreamHandler(websocket.WebSocketHandler):
         else:
             self.write_message(msg)
 
+    def allow_draft76(self):
+        """Allow draft 76, until browsers such as Safari update to RFC 6455.
+        
+        This has been disabled by default in tornado in release 2.2.0, and
+        support will be removed in later versions.
+        """
+        return True
+
 
 class AuthenticatedZMQStreamHandler(ZMQStreamHandler):