diff --git a/docs/requirements.txt b/docs/requirements.txt
index 157b292..9cb1b0d 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -4,7 +4,7 @@ cakephp-theme==1.1.3
 certifi==2023.7.22
 chardet==3.0.4
 docutils==0.15.2
-idna==2.8
+idna==3.7
 imagesize==1.1.0
 Jinja2==2.11.3
 MarkupSafe==1.1.1