diff --git a/requirements.txt b/requirements.txt
index b4e720d..068b2da 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 matplotlib==3.0.2
 scipy==1.1.0
-numpy==1.15.4
+numpy==1.22.0
 nlopt==2.6.1
 scikit_learn==0.21.2