diff --git a/docs/requirements.txt b/docs/requirements.txt
index 8acece5..a17e851 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -7,7 +7,7 @@ ipyparallel==6.2.2
 lxml==4.6.3
 matplotlib==2.2.3
 numexpr==2.6.8
-numpy==1.15.2
+numpy==1.21.0
 pandas==0.23.4
 python-dateutil==2.7.3
 scipy==1.1.0