diff --git a/requirements.txt b/requirements.txt
index d291360..e80cb32 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ google-auth-oauthlib==0.4.1
 googleapis-common-protos==1.51.0
 gunicorn==20.0.4
 httplib2==0.19.0
-idna==2.9
+idna==3.7
 importlib-metadata==1.6.0
 kombu==4.6.8
 oauthlib==3.1.0