diff --git a/requirements.txt b/requirements.txt
index 3223f63d7..e65ee3c69 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,9 @@ python-daemon>=2.0.4,<2.1.0
 extras
 statsd>=3.0
 PrettyTable>=0.6,<0.8
-openstacksdk>=0.17.2,!=0.18.0
+# openstacksdk 0.20.0 exposes a bug in keystoneauth. The pin can be removed
+# once keystoneauth1 has made a release
+openstacksdk>=0.17.2,!=0.18.0,!=0.20.0
 diskimage-builder>=2.0.0
 voluptuous
 kazoo