diff --git a/requirements.txt b/requirements.txt
index 1b02260e65..e0ec4c908f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ oslo.policy>=0.5.0 # Apache-2.0
 oslo.rootwrap>=2.0.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
 oslo.service>=1.10.0 # Apache-2.0
-oslo.utils>=3.5.0 # Apache-2.0
+oslo.utils>=3.9.0 # Apache-2.0
 oslo.concurrency>=3.8.0 # Apache-2.0
 paramiko>=2.0 # LGPL
 Paste # MIT