diff --git a/examples/werewolf_game/actions/common_actions.py b/examples/werewolf_game/actions/common_actions.py
index 14e3cc0c0..af477d397 100644
--- a/examples/werewolf_game/actions/common_actions.py
+++ b/examples/werewolf_game/actions/common_actions.py
@@ -64,7 +64,6 @@ class Speak(Action):
 
         return rsp_json['SPEECH_OR_VOTE']
 
-
 class NighttimeWhispers(Action):
     """
 
diff --git a/examples/werewolf_game/actions/werewolf_actions.py b/examples/werewolf_game/actions/werewolf_actions.py
index cb30ca7eb..74905ff16 100644
--- a/examples/werewolf_game/actions/werewolf_actions.py
+++ b/examples/werewolf_game/actions/werewolf_actions.py
@@ -1,6 +1,7 @@
 from metagpt.actions import Action
 from examples.werewolf_game.actions.common_actions import Speak, NighttimeWhispers
 
+
 class Hunt(NighttimeWhispers):
     ROLE = "Werewolf"
     ACTION = "KILL"