diff --git a/requirements.txt b/requirements.txt
index 9470302..2b34663 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 pbr>=1.6
 Babel>=1.3
-cliff>=1.14.0 # Apache-2.0
+cliff!=1.16.0,!=1.17.0,>=1.14.0 # Apache-2.0
 oslo.i18n>=1.5.0 # Apache-2.0
 python-keystoneclient!=1.8.0,>=1.6.0
 requests!=2.8.0,!=2.9.0,>=2.5.2