diff --git a/docs/prepare_env/requirements.txt b/docs/prepare_env/requirements.txt
index 23b3d77d..9e1fa8a8 100644
--- a/docs/prepare_env/requirements.txt
+++ b/docs/prepare_env/requirements.txt
@@ -10,7 +10,7 @@ tensorboardX
 python_speech_features
 resampy
 opencv_python
-face_alignment
+face_alignment==1.3.3
 matplotlib
 configargparse
 librosa==0.9.2
@@ -25,4 +25,4 @@ moviepy
 dearpygui
 ninja
 pyaudio # for extract esperanto
-mediapipe==0.8.11
\ No newline at end of file
+mediapipe==0.8.11