diff --git a/requirements.txt b/requirements.txt
index 38f5839..be49eb0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 networkx==2.2
-numpy==1.15.4
+numpy==1.22.0
 scikit-learn==0.20.1
 scipy==1.1.0
 pyemd==0.5.1