diff --git a/python-taskflow.spec b/python-taskflow.spec
index 19e1c605830d4e3d8010b9c56097c9194ab45a6d..c6925330d020e57864071982973e17f8e2d5c66f 100644
--- a/python-taskflow.spec
+++ b/python-taskflow.spec
@@ -1,7 +1,7 @@
 %global _empty_manifest_terminate_build 0
 Name:		python-taskflow
 Version:	3.1.0
-Release:	1
+Release:	2
 Summary:	Taskflow structured state management library.
 License:	Apache-2.0
 URL:		https://docs.openstack.org/taskflow/latest/
@@ -92,6 +92,7 @@ We also have sphinx documentation in ``docs/source``.
 %package -n python2-taskflow
 Summary:	Taskflow structured state management library.
 Provides:	python2-taskflow
+BuildRequires:	python2-pbr
 BuildRequires:	python2-devel
 BuildRequires:	python2-setuptools
 Requires:	python2-debtcollector
@@ -336,5 +337,7 @@ mv %{buildroot}/doclist.lst .
 %{_docdir}/*
 
 %changelog
+* Sat May 29 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