diff --git a/resources/requirements.txt b/resources/requirements.txt
index 382e3f9..ae4c531 100644
--- a/resources/requirements.txt
+++ b/resources/requirements.txt
@@ -14,7 +14,7 @@ commonmark==0.5.4
 doc8==0.8.0
 docutils==0.14
 filelock==3.0.9
-idna==2.7
+idna==3.15
 imagesize==1.1.0
 jinja2==2.10
 markdown==3.0.1