diff --git a/requirements_tts.txt b/requirements_tts.txt
index 9e8326902..c30e23d54 100644
--- a/requirements_tts.txt
+++ b/requirements_tts.txt
@@ -1,6 +1,6 @@
 # for TTS recipes
-matplotlib
-cython
-numba
-g2p_en
-espnet_tts_frontend
\ No newline at end of file
+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