diff --git a/cosyvoice/cli/model.py b/cosyvoice/cli/model.py
index 024fa7f..de86a24 100644
--- a/cosyvoice/cli/model.py
+++ b/cosyvoice/cli/model.py
@@ -201,6 +201,7 @@ class CosyVoiceModel:
             self.llm_end_dict.pop(this_uuid)
             self.mel_overlap_dict.pop(this_uuid)
             self.hift_cache_dict.pop(this_uuid)
+            self.flow_cache_dict.pop(this_uuid)
 
     def vc(self, source_speech_token, flow_prompt_speech_token, prompt_speech_feat, flow_embedding, stream=False, speed=1.0, **kwargs):
         # this_uuid is used to track variables related to this inference thread