diff --git a/requirements.txt b/requirements.txt
index ae6b8c1..1acfdcf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ entrypoints==0.3
 flake8==3.7.9
 fonttools==4.12.1
 html2text==2020.1.16
-idna==2.9
+idna==3.2
 isort==4.3.21
 lazy-object-proxy==1.4.3
 mccabe==0.6.1