diff --git a/requirements.txt b/requirements.txt
index 6fa2559..e5cea5a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@
 osc-lib>=1.7.0 # 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
 
 Babel!=2.4.0,>=2.3.4 # BSD
 iso8601>=0.1.11 # MIT