diff --git a/requirements.txt b/requirements.txt
index 30d7a6836..7265500e3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ click==7.1.2
     # via flask
 colorama==0.4.4
     # via awscli
-dnspython==1.16.0
+dnspython==2.1.0
     # via eventlet
 docopt==0.6.2
     # via notifications-python-client