diff --git a/python-automaton.spec b/python-automaton.spec
index dc34a8680eaa57a9588a9796ec616574bddaf078..1c342c32aba8b9fa2a375b15b38d896323cba89c 100644
--- a/python-automaton.spec
+++ b/python-automaton.spec
@@ -1,7 +1,7 @@
 %global _empty_manifest_terminate_build 0
 Name:		python-automaton
 Version:	1.14.0
-Release:	2
+Release:	3
 Summary:	Friendly state machines for python.
 License:	Apache-2.0
 URL:		https://docs.openstack.org/automaton/latest/
@@ -14,6 +14,7 @@ Friendly state machines for python.
 %package -n python2-automaton
 Summary:	Friendly state machines for python.
 Provides:	python2-automaton
+BuildRequires:  python2-pbr
 BuildRequires:	python2-devel
 BuildRequires:	python2-setuptools
 Requires:	python2-pbr
@@ -71,6 +72,8 @@ mv %{buildroot}/doclist.lst .
 %{_docdir}/*
 
 %changelog
+* Mon May 31 2021 huangtianhua <huangtianhua223@gmail.com>
+- Adds BuildRequires python2-pbr to make obs success
 * Sun May 23 2021 openstack-sig <openstack@openeuler.org>
 - Fix Provides
 * Fri May 07 2021 openstack-sig <openstack@openeuler.org>