diff --git a/docs/source/recipes/TTS/ljspeech/vits.rst b/docs/source/recipes/TTS/ljspeech/vits.rst
index d08aa0f47..7296fc98d 100644
--- a/docs/source/recipes/TTS/ljspeech/vits.rst
+++ b/docs/source/recipes/TTS/ljspeech/vits.rst
@@ -1,11 +1,11 @@
-VITS
+VITS-LJSpeech
 ===============
 
 This tutorial shows you how to train an VITS model
 with the `LJSpeech <https://keithito.com/LJ-Speech-Dataset/>`_ dataset.
 
 .. note::
-  
+
    TTS related recipes require packages in ``requirements-tts.txt``.
 
 .. note::
diff --git a/docs/source/recipes/TTS/vctk/vits.rst b/docs/source/recipes/TTS/vctk/vits.rst
index 34024a5ea..45ae9d9d2 100644
--- a/docs/source/recipes/TTS/vctk/vits.rst
+++ b/docs/source/recipes/TTS/vctk/vits.rst
@@ -1,11 +1,11 @@
-VITS
+VITS-VCTK
 ===============
 
 This tutorial shows you how to train an VITS model
 with the `VCTK <https://datashare.ed.ac.uk/handle/10283/3443>`_ dataset.
 
 .. note::
-  
+
    TTS related recipes require packages in ``requirements-tts.txt``.
 
 .. note::
diff --git a/requirements-tts.txt b/requirements-tts.txt
index c30e23d54..eae50ba7b 100644
--- a/requirements-tts.txt
+++ b/requirements-tts.txt
@@ -3,4 +3,5 @@ matplotlib==3.8.2
 cython==3.0.6
 numba==0.58.1
 g2p_en==2.1.0
-espnet_tts_frontend==0.0.3
\ No newline at end of file
+espnet_tts_frontend==0.0.3
+# piper_phonemize: refer to https://github.com/rhasspy/piper-phonemize, could install the pre-built wheels from https://github.com/csukuangfj/piper-phonemize/releases/tag/2023.12.5