diff --git a/0001-modify-for-obs-build.patch b/0001-modify-for-obs-build.patch
deleted file mode 100644
index b84e8fb30cd4e6667fe16c6f79dbc6457e43b9d6..0000000000000000000000000000000000000000
--- a/0001-modify-for-obs-build.patch
+++ /dev/null
@@ -1,29 +0,0 @@
-From 2372a1ac834d17d99899275685606f5ebb15f265 Mon Sep 17 00:00:00 2001
-From: jeff200902 <jeff200902@163.com>
-Date: Mon, 27 Jul 2020 18:59:20 +0800
-Subject: [PATCH] modify for osb build
-
----
- build | 6 ++++++
- 1 file changed, 6 insertions(+)
-
-diff --git a/build b/build
-index 9b2d0f2..df9ce59 100755
---- a/build
-+++ b/build
-@@ -1549,6 +1549,12 @@ if test \( -n "$RPMS" -o -n "$DEBS" \) -a -n "$CREATE_BASELIBS"; then
-     create_baselibs
- fi
- 
-+if test -f "$BUILD_ROOT/etc/resolv.conf"; then
-+    cat $BUILD_ROOT/etc/resolv.conf
-+else
-+    cp /etc/resolv.conf $BUILD_ROOT/etc/
-+fi
-+
- exitcode=0
- 
- # post build work
--- 
-2.23.0
-
diff --git a/0002-ccache-for-obs-build.patch b/0002-ccache-for-obs-build.patch
deleted file mode 100644
index 8cf75883a59d55b4b803990f58fd039643ebbada..0000000000000000000000000000000000000000
--- a/0002-ccache-for-obs-build.patch
+++ /dev/null
@@ -1,68 +0,0 @@
-diff --git a/build b/build
-index 6f1b474..5191c0d 100755
---- a/build
-+++ b/build
-@@ -434,6 +434,7 @@ cleanup_and_exit () {
- 	umount -n $BUILD_ROOT/dev/pts 2>/dev/null || true
- 	umount -n $BUILD_ROOT/dev/shm 2>/dev/null || true
- 	umount -n $BUILD_ROOT/sys 2>/dev/null || true
-+	umount -n $BUILD_ROOT/home/abuild/.ccache 2>/dev/null || true
- 	test -n "$VM_ROOT" -a "$VM_ROOT" != 1 && umount $BUILD_ROOT 2>/dev/null || true
- 	test -n "$VM_TYPE" && vm_cleanup
-     fi
-@@ -1360,6 +1361,7 @@ for RECIPEFILE in "${RECIPEFILES[@]}" ; do
-     mkdir -p $BUILD_ROOT/home/abuild/.m2
-     chown $ABUILD_UID:$ABUILD_GID $BUILD_ROOT/home/abuild/.m2
-     cp $BUILD_DIR/settings.xml $BUILD_ROOT/home/abuild/.m2/
-+	build-ccache "$BUILD_ROOT" "$REASON" "$ABUILD_UID" "$ABUILD_GID"
- 	BUILD_USER_ABUILD_USED=true
-     else
- 	# building as root
-diff --git a/build-ccache b/build-ccache
-new file mode 100755
-index 0000000..7293d01
---- /dev/null
-+++ b/build-ccache
-@@ -0,0 +1,42 @@
-+#!/bin/bash
-+# Script to setup ccache.  
-+#
-+# BUILD_ROOT        here the packages will be built
-+# REASON            here the reason of the build
-+#                   eg: "building {package} for '{project}' repository '{repository}' arch '{arch}' srcmd5 '{md5}'
-+#
-+################################################################
-+
-+BUILD_ROOT=$1
-+REASON=$2
-+ABUILD_UID=$3
-+ABUILD_GID=$4
-+
-+CCACHE_HOME_DIR=/home/abuild/.ccache
-+
-+package=`echo $REASON |awk '{print $2}'`
-+project=`echo $REASON |awk '{print $5}'`
-+project=${project//\'/}
-+
-+# check ccache
-+if [[ -d /srv/ccache/$project ]] && [[ -e $BUILD_ROOT/usr/bin/ccache ]] && [[ ! -z $project ]] && [[ ! -z $package ]]
-+then
-+    # openjdk-11 excluded
-+    if [[ $package == "openjdk-11" ]]
-+    then
-+        exit
-+    fi
-+
-+    echo "Building $package for $project using ccache"
-+
-+    # mount ccache home dir to obs-worker directory
-+    mkdir -p ${BUILD_ROOT}${CCACHE_HOME_DIR}
-+    chown $ABUILD_UID:$ABUILD_GID ${BUILD_ROOT}${CCACHE_HOME_DIR}
-+    mount --bind /srv/ccache/$project ${BUILD_ROOT}${CCACHE_HOME_DIR}
-+
-+    # link all compilers to ccache
-+    cp $BUILD_ROOT/usr/bin/ccache $BUILD_ROOT/usr/local/bin
-+    for compiler in $(ls $BUILD_ROOT/usr/bin | grep -E '^(cc|gcc|[cg][+][+]|clang|clang[+][+])([-]?[234][.]?[0-9])*$'); do
-+        ln -sf ccache $BUILD_ROOT/usr/local/bin/$compiler
-+    done
-+fi
diff --git a/20211125.tar.gz b/20211125.tar.gz
new file mode 100644
index 0000000000000000000000000000000000000000..7e1716b4311999cbd341b28ec2a438e9e7954578
Binary files /dev/null and b/20211125.tar.gz differ
diff --git a/obs-build-20191114.tar.gz b/obs-build-20191114.tar.gz
deleted file mode 100644
index ca55de5aa293838a7619ffe916a80c61a7e65ae6..0000000000000000000000000000000000000000
Binary files a/obs-build-20191114.tar.gz and /dev/null differ
diff --git a/obs-build.spec b/obs-build.spec
index f2375628c40b88fbdce1be651c560bd2d0ed9832..3e14a11178ceec257df252344b5762ce036bbcf5 100644
--- a/obs-build.spec
+++ b/obs-build.spec
@@ -1,16 +1,14 @@
 Name:           build
-Version:        20191114
-Release:        324.6
+Version:        20211125
+Release:        1
 Summary:        A tool to build binary packages
 License:        GPL-2.0-only OR GPL-3.0-only
 Url:            https://github.com/openSUSE/obs-build
-Source:         obs-build-%{version}.tar.gz
-Patch0000:      0001-modify-for-obs-build.patch
+Source:         https://github.com/openSUSE/obs-build/archive/refs/tags/%{version}.tar.gz
 Patch0001:      0001-add-settings.patch
-Patch0002:      0002-ccache-for-obs-build.patch
 BuildArch:      noarch
 Requires:       bash binutils perl tar psmisc build-mkbaselibs
-BuildRequires:  bash binutils perl psmisc tar
+BuildRequires:  bash binutils perl psmisc tar perl-libwww-perl
 
 %description
 This is a tool to build binary packages in a safe and reproducible
@@ -77,8 +75,8 @@ sed -i 's,build-mkbaselibs,,' configs/*.conf
 %{_bindir}/build
 %{_bindir}/buildvc
 %{_bindir}/unrpm
+%{_bindir}/pbuild
 /usr/lib/build
-%config(noreplace) /usr/lib/build/emulator/emulator.sh
 %exclude /usr/lib/build/mkbaselibs
 %exclude /usr/lib/build/baselibs*
 %exclude /usr/lib/build/mkdrpms
@@ -92,16 +90,18 @@ sed -i 's,build-mkbaselibs,,' configs/*.conf
 %files mkdrpms
 %defattr(-,root,root)
 %dir /usr/lib/build
-/usr/lib/build/mkdrpms
 
 %files help
 %defattr(-,root,root)
-%doc README
 %{_mandir}/man1/build.1*
 %{_mandir}/man1/unrpm.1*
 %{_mandir}/man1/buildvc.1*
+%{_mandir}/man1/pbuild.1.gz
 
 %changelog
+* Sat Jan 15 2022 houyingchao <houyingchao@huawei.com> - 20211125-1
+- Upgrade to 20211125 version
+
 * Thu Jan 07 2021 openEuler miao_kaibo <miaokaibo@outlook.com> - 20191114-324.5
 - Add settings.xml for jar