diff --git a/requirements.txt b/requirements.txt
index eaa220c7..bb41854b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ docutils==0.15.2
 enum-compat==0.0.2
 Flask==1.1.1
 furl==2.0.0
-idna==2.8
+idna==3.7
 inflection==0.3.1
 itsdangerous==1.1.0
 Jinja2==2.10.1