diff --git a/requirements.txt b/requirements.txt
index e8548e9..2566e19 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 simpy==3.0.11
-numpy==1.14.5
+numpy==1.22.0
 pandas==0.23.1
 networkx==2.2
 matplotlib==2.2.2
\ No newline at end of file