diff --git a/requirements.txt b/requirements.txt
index 38a0d17363..a0e437a4bf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ oslo.config>=2.3.0 # Apache-2.0
 oslo.i18n>=1.5.0 # Apache-2.0
 oslo.policy>=0.5.0 # Apache-2.0
 oslo.serialization>=1.4.0 # Apache-2.0
-oslo.utils>=2.4.0 # Apache-2.0
+oslo.utils!=2.6.0,>=2.4.0 # Apache-2.0
 pyScss>=1.3.4 # MIT License
 python-ceilometerclient>=1.5.0
 python-cinderclient>=1.3.1