diff --git a/requirements.txt b/requirements.txt
index 846317b..8e9e3f1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ PrettyTable<0.8,>=0.7 # BSD
 openstacksdk>=0.7.4 # 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
 python-heatclient>=0.6.0 # Apache-2.0
 python-openstackclient>=2.1.0 # Apache-2.0
 PyYAML>=3.1.0 # MIT