diff --git a/docs/requirements.txt b/docs/requirements.txt
index 30c53b4..1b51acf 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -7,7 +7,7 @@ idna==2.7
 imagesize==1.1.0
 Jinja2==2.10
 MarkupSafe==1.0
-numpy==1.15.1
+numpy==1.22.0
 packaging==17.1
 Pygments==2.2.0
 pyparsing==2.2.1