diff --git a/requirements.txt b/requirements.txt
index 40b89ad..4c1b527 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 ortools==7.5.7466
 dash_core_components==1.8.1
 networkx==2.4
-numpy==1.18.1
+numpy==1.22.0
 dash_html_components==1.0.2
 plotly==4.5.3
 matplotlib==3.2.0