diff --git a/requirements.txt b/requirements.txt
index 3f503f3..7fdf085 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 pandas==1.0.5
 scikit-learn==0.20.0
 scipy==1.4.1
-numpy==1.22.0
+numpy==1.16.3
 six==1.11.0
 tabulate==0.8.7