diff --git a/requirements.txt b/requirements.txt
index 71b2463e..9bcd3f08 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,6 +10,6 @@ stevedore>=1.10.0 # Apache-2.0
 requests>=2.10.0 # Apache-2.0
 oslo.i18n>=2.1.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
-oslo.utils>=3.5.0 # Apache-2.0
+oslo.utils>=3.9.0 # Apache-2.0
 os-client-config>=1.13.1 # Apache-2.0
 PrettyTable<0.8,>=0.7 # BSD