diff --git a/docs/requirements.txt b/docs/requirements.txt
index c9b2f24..47f7d90 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,6 +1,6 @@
 alabaster==0.7.12
 matplotlib==2.2.3
-numpy==1.18.1
+numpy==1.22.0
 pandas==0.25.3
 scipy==1.4.1
 seaborn==0.9.0