diff --git a/requirements.txt b/requirements.txt
index 7817635..314c0d7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,4 +13,4 @@ requests==2.11.1
 six==1.10.0
 gunicorn==19.6.0
 python-etcd>=0.4.3 # MIT License
-oslo.utils>=3.18.0 # Apache-2.0
+oslo.utils>=3.20.0 # Apache-2.0