diff --git a/requirements.txt b/requirements.txt
index 921af308..e9af491f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 torch>=1.5
 tensorflow==2.3.1
-numpy>=1.16.0
+numpy>=1.16.0; python_version >= "3.7"
+numpy>=1.16.0,<1.20; python_version < "3.7"
 scipy>=0.19.0
 numba==0.48
 librosa==0.7.2