diff --git a/docs/requirements.txt b/docs/requirements.txt
index 021d563..a354bd4 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -16,7 +16,7 @@ docutils==0.17.1
     # via
     #   sphinx
     #   sphinx-rtd-theme
-idna==3.4
+idna==3.7
     # via requests
 imagesize==1.4.1
     # via sphinx