diff --git a/requirements.txt b/requirements.txt
index 70fbca17d7..dae7525cdb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 pbr>=0.5.21,<1.0
-dnspython>=1.10.0
+dnspython>=1.9.4
 eventlet>=0.9.15
 greenlet>=0.3.1
 netifaces>=0.5