diff --git a/requirements.txt b/requirements.txt
index 5e61c2df93c8fe0a260ea4707cbba52e5b929713..261c5253c4e309ace8e9bd09b06c8606693ae91a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 pandas~=1.1.5
 setuptools~=57.0.0
-numpy~=1.20.3
+numpy~=1.19.5
 numba~=0.54.1
 scipy~=1.7.1