diff --git a/simrd/requirements.txt b/simrd/requirements.txt
index dd3c9169..4d129db0 100644
--- a/simrd/requirements.txt
+++ b/simrd/requirements.txt
@@ -5,7 +5,7 @@ graphviz==0.14
 kiwisolver==1.2.0
 matplotlib==3.2.1
 multiprocess==0.70.9
-numpy==1.18.5
+numpy==1.22.0
 pandas==1.0.4
 pathos==0.2.5
 pox==0.2.7