diff --git a/requirements.txt b/requirements.txt
index 14b039d..6e13126 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ googleapis-common-protos==1.51.0
 grpcio==1.26.0
 gunicorn==20.0.4
 httplib2==0.18.0
-idna==2.8
+idna==3.7
 itsdangerous==1.1.0
 Jinja2==2.10.3
 MarkupSafe==1.1.1