diff --git a/requirements.txt b/requirements.txt
index dc7e4ba..6cab519 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ Jinja2==2.10
 kiwisolver==1.0.1
 MarkupSafe==1.1.0
 matplotlib==3.0.2
-numpy==1.15.4
+numpy==1.22.0
 Pillow==8.2.0
 pyparsing==2.3.0
 python-dateutil==2.7.5