diff --git a/cosyvoice/cli/frontend.py b/cosyvoice/cli/frontend.py
index 1c1c64c..ba2ab01 100644
--- a/cosyvoice/cli/frontend.py
+++ b/cosyvoice/cli/frontend.py
@@ -69,7 +69,7 @@ class CosyVoiceFrontEnd:
                 'failed to initialize ttsfrd resource'
             self.frd.set_lang_type('pinyinvg')
         else:
-            self.zh_tn_model = ZhNormalizer(remove_erhua=False, full_to_half=False)
+            self.zh_tn_model = ZhNormalizer(remove_erhua=False, full_to_half=False, overwrite_cache=True)
             self.en_tn_model = EnNormalizer()
 
     def _extract_text_token(self, text):