diff --git a/tests-extra/README b/tests-extra/README
index b0ed42d3671cbab4b8ca4e8c91cfad629be21a46..fc37bf1e87042eacca861b2eb8b160df7ecdd65e 100644
--- a/tests-extra/README
+++ b/tests-extra/README
@@ -2,7 +2,7 @@ Prerequisites:
 --------------
 
 Python >=3.3
-dnspython >=1.16.0
+dnspython >=2.2.0
 python3-psutil
 dnssec-signzone
 dnssec-keygen