diff --git a/requirements.txt b/requirements.txt
index 04b5dbf..554b7ab 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,5 +10,5 @@
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 six>=1.10.0 # MIT
 msgpack-python>=0.4.0 # Apache-2.0
-oslo.utils>=3.31.0 # Apache-2.0
+oslo.utils>=3.33.0 # Apache-2.0
 pytz>=2013.6 # MIT