diff --git a/requirements.txt b/requirements.txt
index 0e2259d6..146ace47 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ iso8601>=0.1.9 # MIT
 keystoneauth1>=2.1.0 # Apache-2.0
 oslo.i18n>=2.1.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
-oslo.utils>=3.4.0 # Apache-2.0
+oslo.utils>=3.5.0 # Apache-2.0
 PrettyTable<0.8,>=0.7 # BSD
 python-keystoneclient!=1.8.0,!=2.1.0,>=1.6.0 # Apache-2.0
 requests!=2.9.0,>=2.8.1 # Apache-2.0