diff --git a/requirements.txt b/requirements.txt
index 9e142a4..1450efd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
-Cython
+Cython==0.29.21
 librosa==0.9.2
 numpy==1.21.6
-scipy
+scipy==1.5.2
 tensorboard
 torch==1.13.1
 torchvision==0.14.1