diff --git a/requirements.txt b/requirements.txt
index 9d523ebd7d34..c38ade020dcf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -53,7 +53,7 @@ psutil>=3.2.2 # BSD
 oslo.versionedobjects>=1.35.0 # Apache-2.0
 os-brick>=5.2 # Apache-2.0
 os-resource-classes>=1.1.0 # Apache-2.0
-os-traits>=2.7.0 # Apache-2.0
+os-traits>=2.9.0 # Apache-2.0
 os-vif>=1.15.2 # Apache-2.0
 castellan>=0.16.0 # Apache-2.0
 microversion-parse>=0.2.1 # Apache-2.0