diff --git a/docs/requirements.txt b/docs/requirements.txt
index 420d0a11..75527b2b 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -7,7 +7,7 @@ Babel==2.9.1
 docutils==0.21.2
 imagesize==0.7.1
 Jinja2==2.11.3
-MarkupSafe==0.23
+MarkupSafe==3.0.2
 Pygments==2.19.1
 pytz==2016.4
 six==1.17.0