diff --git a/requirements.txt b/requirements.txt
index 84d114c..ad8b108 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@
 
 Babel>=1.3 # BSD
 oslo.i18n>=2.1.0 # Apache-2.0
-oslo.utils>=3.4.0 # Apache-2.0
+oslo.utils>=3.5.0 # Apache-2.0
 pbr>=1.6 # Apache-2.0
 python-keystoneclient!=1.8.0,!=2.1.0,>=1.6.0 # Apache-2.0
 six>=1.9.0 # MIT