diff --git a/docs/requirements.txt b/docs/requirements.txt
index fb4e745..a06957f 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -10,7 +10,7 @@ Jinja2==2.11.1
 kiwisolver==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.1.3
-numpy==1.18.1
+numpy==1.22.0
 packaging==20.1
 Pygments==2.5.2
 pyparsing==2.4.6