diff --git a/python/boardgameio.py b/python/boardgameio.py
index 8130ed637..54b8f4b94 100644
--- a/python/boardgameio.py
+++ b/python/boardgameio.py
@@ -12,7 +12,7 @@
 """
 
 import logging
-import socketIO_client as io
+import socketIO_client_nexus as io
 
 class Namespace(io.BaseNamespace):
     """
@@ -47,8 +47,12 @@ def on_reconnect(self):
         """ Handle reconnection event. """
         self.log.info('reconnected')
 
+    def on_update(self, *args):
+        """ Handle server 'update' event. """
+        self.on_sync(*args)
+
     def on_sync(self, *args):
-        """ Handle serve 'sync' event. """
+        """ Handle server 'sync' event. """
         game_id = args[0]
         state = args[1]
         state_id = state['_stateID']
@@ -77,7 +81,7 @@ def on_sync(self, *args):
                         # pop next action
                         action = self.actions.pop(0)
                         self.log.info('sent action: %s', action['payload'])
-                        self.emit('action', action, state_id, game_id,
+                        self.emit('update', action, state_id, game_id,
                                   self.bot.player_id)
 
 
@@ -144,11 +148,11 @@ def think(self, _G, _ctx):
         To be overridden by the user.
         Shall return a list of actions, instantiated with make_move().
         """
-        assert False
+        raise NotImplementedError
 
     def gameover(self, _G, _ctx):
         """
         To be overridden by the user.
         Shall handle game over.
         """
-        assert False
+        raise NotImplementedError
diff --git a/python/test_boardgameio.py b/python/test_boardgameio.py
index b2b7d7da8..090c964cd 100644
--- a/python/test_boardgameio.py
+++ b/python/test_boardgameio.py
@@ -16,7 +16,7 @@
 import unittest
 import logging
 import mock
-import socketIO_client as io
+import socketIO_client_nexus as io
 from boardgameio import Namespace, Bot
 
 
@@ -46,7 +46,15 @@ def test_on_sync_shall_call_think(self):
         # call Namespace.on_sync()
         self.sut.on_sync(self.botmock.game_id, self.game_state)
         self.botmock.think.assert_called_once_with(self.game_state['G'], self.game_state['ctx'])
-        self.sut.emit.assert_called_once_with('action', self.resulting_move,
+        self.sut.emit.assert_called_once_with('update', self.resulting_move,
+                                              self.game_state['_stateID'],
+                                              self.botmock.game_id, self.botmock.player_id)
+
+    def test_on_update_shall_call_think(self):
+        # call Namespace.on_update()
+        self.sut.on_update(self.botmock.game_id, self.game_state)
+        self.botmock.think.assert_called_once_with(self.game_state['G'], self.game_state['ctx'])
+        self.sut.emit.assert_called_once_with('update', self.resulting_move,
                                               self.game_state['_stateID'],
                                               self.botmock.game_id, self.botmock.player_id)