diff --git a/oslo.concurrency-3.25.0.tar.gz b/oslo.concurrency-3.25.0.tar.gz
new file mode 100644
index 0000000000000000000000000000000000000000..7339aab1333d8cda3ee16fdfea665ccd93d29fd5
Binary files /dev/null and b/oslo.concurrency-3.25.0.tar.gz differ
diff --git a/oslo.concurrency-4.3.1.tar.gz b/oslo.concurrency-4.3.1.tar.gz
deleted file mode 100644
index 874a650f1750ea3f6339a3cd271ba81242a43a1c..0000000000000000000000000000000000000000
Binary files a/oslo.concurrency-4.3.1.tar.gz and /dev/null differ
diff --git a/python-oslo-concurrency.spec b/python-oslo-concurrency.spec
index 5c447e9766663ed6e71e83a5e2cfe5f89cd2ad29..09b87a43f3a5511470330303eb3c992d24c69593 100644
--- a/python-oslo-concurrency.spec
+++ b/python-oslo-concurrency.spec
@@ -1,45 +1,60 @@
 %global _empty_manifest_terminate_build 0
 Name:		python-oslo-concurrency
-Version:	4.3.1
+Version:	3.25.0
 Release:	2
 Summary:	Oslo Concurrency library
 License:	Apache-2.0
 URL:		https://docs.openstack.org/oslo.concurrency/latest/
-Source0:	https://files.pythonhosted.org/packages/65/d9/2c03946a497124d29d4ea75f8395a0eee577ac01533acbfe16823546de70/oslo.concurrency-4.3.1.tar.gz
+Source0:	https://files.pythonhosted.org/packages/83/97/cd5898720c3375621ab10307ffc347bdf09b8078365871b4388683429491/oslo.concurrency-3.25.0.tar.gz
 BuildArch:	noarch
-
-Requires:	python3-fasteners
-Requires:	python3-pbr
-
 %description
-OpenStack library for all concurrency-related code
+==================
+ oslo.concurrency
+==================
+The oslo.concurrency library has utilities for safely running multi-thread,
+multi-process applications using locking mechanisms and for running
+external processes.
 
-%package -n python3-oslo-concurrency
+%package -n python2-oslo-concurrency
 Summary:	Oslo Concurrency library
-Provides:	python-oslo-concurrency
-BuildRequires:	python3-devel
-BuildRequires:	python3-setuptools
-BuildRequires:  python3-pip
-BuildRequires:  python3-pbr
-%description -n python3-oslo-concurrency
-OpenStack library for all concurrency-related code
-
+Provides:	python2-oslo-concurrency
+BuildRequires:	python2-pbr
+BuildRequires:	python2-devel
+BuildRequires:	python2-setuptools
+Requires:	python2-pbr
+Requires:	python2-oslo-config
+Requires:	python2-oslo-i18n
+Requires:	python2-oslo-utils
+Requires:	python2-six
+Requires:	python2-fasteners
+Requires:	python2-enum34
+%description -n python2-oslo-concurrency
+==================
+ oslo.concurrency
+==================
+The oslo.concurrency library has utilities for safely running multi-thread,
+multi-process applications using locking mechanisms and for running
+external processes.
 
 %package help
 Summary:	Development documents and examples for oslo.concurrency
-Provides:	python3-oslo-concurrency-doc
+Provides:	python2-oslo-concurrency-doc
 %description help
-OpenStack library for all concurrency-related code
-
+==================
+ oslo.concurrency
+==================
+The oslo.concurrency library has utilities for safely running multi-thread,
+multi-process applications using locking mechanisms and for running
+external processes.
 
 %prep
-%autosetup -n oslo.concurrency-4.3.1
+%autosetup -n oslo.concurrency-3.25.0
 
 %build
-%py3_build
+%py2_build
 
 %install
-%py3_install
+%py2_install
 install -d -m755 %{buildroot}/%{_pkgdocdir}
 if [ -d doc ]; then cp -arf doc %{buildroot}/%{_pkgdocdir}; fi
 if [ -d docs ]; then cp -arf docs %{buildroot}/%{_pkgdocdir}; fi
@@ -66,14 +81,14 @@ popd
 mv %{buildroot}/filelist.lst .
 mv %{buildroot}/doclist.lst .
 
-%files -n python3-oslo-concurrency -f filelist.lst
-%dir %{python3_sitelib}/*
+%files -n python2-oslo-concurrency -f filelist.lst
+%dir %{python2_sitelib}/*
 
 %files help -f doclist.lst
 %{_docdir}/*
 
 %changelog
-* Sat Jan 30 2021 zhangy <zhangy1317@foxmail.com>
-- Add buildrequires
-* Sat Nov 21 2020 Python_Bot <Python_Bot@openeuler.org>
+* Mon May 31 2021 huangtianhua <huangtianhua223@gmail.com>
+- Adds BuildRequires python2-pbr to make obs success
+* Sat May 08 2021 OpenStack_SIG <openstack@openeuler.org>
 - Package Spec generated