diff --git a/TTS/tts/configs/xtts_config.py b/TTS/tts/configs/xtts_config.py
index bbf048e1ab..a0766d425c 100644
--- a/TTS/tts/configs/xtts_config.py
+++ b/TTS/tts/configs/xtts_config.py
@@ -89,6 +89,7 @@ class XttsConfig(BaseTTSConfig):
             "ko",
             "ja",
             "hi",
+            "vi",
         ]
     )
 
diff --git a/TTS/tts/layers/xtts/tokenizer.py b/TTS/tts/layers/xtts/tokenizer.py
index 1a3cc47aaf..be33fff35b 100644
--- a/TTS/tts/layers/xtts/tokenizer.py
+++ b/TTS/tts/layers/xtts/tokenizer.py
@@ -611,6 +611,7 @@ def __init__(self, vocab_file=None):
             "ja": 71,
             "hu": 224,
             "ko": 95,
+            "vi": 250,
         }
 
     @cached_property
@@ -639,6 +640,8 @@ def preprocess_text(self, txt, lang):
         elif lang == "hi":
             # @manmay will implement this
             txt = basic_cleaners(txt)
+        elif lang == "vi":
+            txt = basic_cleaners(txt)
         else:
             raise NotImplementedError(f"Language '{lang}' is not supported.")
         return txt