diff --git a/requirements.txt b/requirements.txt
index d06e448e..d26d28a7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 cliff!=1.16.0,!=1.17.0,>=1.15.0 # Apache-2.0
 jsonschema!=2.5.0,<3.0.0,>=2.0.0 # MIT
-osc-lib>=0.3.0 # Apache-2.0
+osc-lib>=0.4.0 # Apache-2.0
 oslo.utils>=3.15.0 # Apache-2.0
 pbr>=1.6 # Apache-2.0
 keystoneauth1>=2.7.0 # Apache-2.0