diff --git a/requirements.txt b/requirements.txt
index 4bc8e3d96..d0c324613 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ keystoneauth1>=3.3.0 # Apache-2.0
 iso8601>=0.1.11 # MIT
 oslo.i18n>=3.15.3 # Apache-2.0
 oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
-oslo.utils>=3.31.0 # Apache-2.0
+oslo.utils>=3.33.0 # Apache-2.0
 PrettyTable<0.8,>=0.7.1 # BSD
 simplejson>=3.5.1 # MIT
 six>=1.10.0 # MIT