diff --git a/requirements.txt b/requirements.txt
index a1b5fe7..c00ab4a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,5 +9,5 @@ python-keystoneclient!=1.8.0,>=1.6.0
 requests>=2.8.1
 warlock<2,>=1.0.1
 six>=1.9.0
-oslo.utils>=2.8.0 # Apache-2.0
+oslo.utils!=3.1.0,>=2.8.0 # Apache-2.0
 oslo.i18n>=1.5.0 # Apache-2.0