diff --git a/doc/UsersGuide/requirements.txt b/doc/UsersGuide/requirements.txt
index b4642f5872..3888acb016 100644
--- a/doc/UsersGuide/requirements.txt
+++ b/doc/UsersGuide/requirements.txt
@@ -18,7 +18,7 @@ docutils==0.20.1
     #   sphinx
     #   sphinx-rtd-theme
     #   sphinxcontrib-bibtex
-idna==3.6
+idna==3.7
     # via requests
 imagesize==1.4.1
     # via sphinx