diff --git a/python-os-traits.spec b/python-os-traits.spec
index cbb00ff62459768fde5804561c758705d1232bf9..678ea36177c29cf2b0615e2cbc17d330fc2ced1d 100644
--- a/python-os-traits.spec
+++ b/python-os-traits.spec
@@ -1,7 +1,7 @@
 %global _empty_manifest_terminate_build 0
 Name:		python-os-traits
 Version:	0.5.0
-Release:	1
+Release:	2
 Summary:	A library containing standardized trait strings
 License:	Apache-2.0
 URL:		https://docs.openstack.org/os-traits/latest/
@@ -22,6 +22,7 @@ network, or device trait.
 %package -n python2-os-traits
 Summary:	A library containing standardized trait strings
 Provides:	python2-os-traits
+BuildRequires:	python2-pbr
 BuildRequires:	python2-devel
 BuildRequires:	python2-setuptools
 Requires:	python2-pbr
@@ -94,5 +95,7 @@ mv %{buildroot}/doclist.lst .
 %{_docdir}/*
 
 %changelog
+* Mon May 31 2021 huangtianhua <huangtianhua223@gmail.com>
+- Adds BuildRequires python2-pbr to make obs success
 * Mon May 10 2021 OpenStack_SIG <openstack@openeuler.org>
 - Package Spec generated