diff --git a/requirements.txt b/requirements.txt
index e70ea6f..76c271c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 keystoneauth1>=2.18.0 # Apache-2.0
-osc-lib>=1.2.0 # Apache-2.0
+osc-lib>=1.5.1 # Apache-2.0
 oslo.i18n>=2.1.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0