diff --git a/requirements.txt b/requirements.txt
index c06114f..9e0fd08 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,4 +10,4 @@ testscenarios>=0.4
 testtools>=1.4.0
 mock>=1.2
 mox3>=0.7.0
-os-client-config>=1.4.0
+os-client-config!=1.6.2,>=1.4.0