diff --git a/requirements.txt b/requirements.txt
index 766dbcd..c8ae968 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ kiwisolver==1.0.1
 matplotlib==3.0.2
 mpi4py==2.0.0
 networkx==2.2
-numpy==1.15.4
+numpy==1.22.0
 pyparsing==2.3.0
 python-dateutil==2.7.5
 six==1.12.0