diff --git a/requirements.txt b/requirements.txt
index 6e8e87db..9155e02d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@
 oslo.config!=3.18.0,>=3.14.0 # Apache-2.0
 oslo.i18n>=2.1.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
-oslo.utils>=3.18.0 # Apache-2.0
+oslo.utils>=3.20.0 # Apache-2.0
 oslo.concurrency>=3.8.0 # Apache-2.0
 stevedore>=1.17.1 # Apache-2.0
 enum34;python_version=='2.7' or python_version=='2.6' or python_version=='3.3' # BSD