diff --git a/docs/requirements.txt b/docs/requirements.txt
index 832a915..ba26bde 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -27,7 +27,7 @@ docutils==0.17.1
     #   sphinx-rtd-theme
 exhale==0.3.6
     # via -r requirements.in
-idna==3.7
+idna==3.15
     # via requests
 imagesize==1.4.1
     # via sphinx