diff --git a/requirements.txt b/requirements.txt
index 1091b3e4076..8427b22f2d0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ chardet==3.0.4
 Click==7.0
 colorclass==2.2.0
 docutils==0.14
-idna==2.8
+idna==3.15
 imagesize==1.1.0
 Jinja2==2.11.3
 MarkupSafe==1.1.1