diff --git a/requirements.txt b/requirements.txt
index 96f6890..3aa21c0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 pvlib==0.5.2
 cufflinks==0.8.2
 pandas==0.21.1
-numpy==1.13.3
+numpy==1.22.0
 scipy==1.0.1
 seaborn==0.8
 matplotlib==2.2.2