diff --git a/applications/Chat/coati/trainer/ppo.py b/applications/Chat/coati/trainer/ppo.py
index 6b99855be..5c7c71d20 100644
--- a/applications/Chat/coati/trainer/ppo.py
+++ b/applications/Chat/coati/trainer/ppo.py
@@ -116,6 +116,9 @@ class PPOTrainer(Trainer):
         self.critic_optim.zero_grad()
 
         return {'reward': experience.reward.mean().item()}
+    
+    def save_model(self, path: str, only_rank0: bool = False, tokenizer: Optional[PreTrainedTokenizerBase] = None) -> None:
+        self.strategy.save_model(model=self.actor, path=path, only_rank0=only_rank0, tokenizer=tokenizer)
 
     def save_model(self, path: str, only_rank0: bool = False, tokenizer: Optional[PreTrainedTokenizerBase] = None) -> None:
         self.strategy.save_model(model=self.actor, path=path, only_rank0=only_rank0, tokenizer=tokenizer)