diff --git a/requirements.txt b/requirements.txt
index d8fd75d..a773405 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 click==7.1.2
-dnspython==1.16.0
+dnspython==2.0.0
 email-validator==1.1.1
 Flask==1.1.2
 Flask-WTF==0.14.3