diff --git a/rpm/devdeps-cos-c-sdk-build.sh b/rpm/devdeps-cos-c-sdk-build.sh
index fa82fab..172f8f7 100644
--- a/rpm/devdeps-cos-c-sdk-build.sh
+++ b/rpm/devdeps-cos-c-sdk-build.sh
@@ -25,13 +25,14 @@ fi
 wget http://mirrors.aliyun.com/oceanbase/OceanBase.repo -P /etc/yum.repos.d/
 yum install obdevtools-cmake-3.22.1 -y
 
+cd $ROOT_DIR
 # depends on libcurl(suggest 7.32.0 or higher)
 wget --no-check-certificate https://curl.se/download/curl-8.1.2.tar.gz -O curl-8.1.2.tar.gz
 tar -zxvf curl-8.1.2.tar.gz
 
 # depends on expat
-wget --no-check-certificate https://sourceforge.net/projects/expat/files/expat/2.5.0/expat-2.5.0.tar.gz/download -O expat-2.5.0.tar.gz
-tar -zxvf expat-2.5.0.tar.gz
+wget --no-check-certificate https://sourceforge.net/projects/expat/files/expat/2.6.2/expat-2.6.2.tar.gz/download -O expat-2.6.2.tar.gz
+tar -zxvf expat-2.6.2.tar.gz
 
 # depends on apr(suggest 1.5.2 or higher)
 wget --no-check-certificate https://dlcdn.apache.org//apr/apr-1.7.4.tar.gz -O apr-1.7.4.tar.gz
@@ -48,4 +49,4 @@ tar -zxvf mxml-3.3.tar.gz
 export PATH=/usr/local/oceanbase/devtools/bin:$PATH
 
 cd $CUR_DIR
-bash $CUR_DIR/rpmbuild.sh $PROJECT_DIR $PROJECT_NAME $VERSION $RELEASE
\ No newline at end of file
+bash $CUR_DIR/rpmbuild.sh $PROJECT_DIR $PROJECT_NAME $VERSION $RELEASE
diff --git a/rpm/devdeps-cos-c-sdk.spec b/rpm/devdeps-cos-c-sdk.spec
index e785b81..b98ac9f 100644
--- a/rpm/devdeps-cos-c-sdk.spec
+++ b/rpm/devdeps-cos-c-sdk.spec
@@ -44,7 +44,7 @@ cd curl-8.1.2
 make
 
 #step 2: install expat
-cd ../expat-2.5.0
+cd ../expat-2.6.2
 ./configure --prefix=%{_tmp_third}
 make
 
diff --git a/rpm/obdevtools-gcc9-build.sh b/rpm/obdevtools-gcc9-build.sh
index 74d4fb1..0e53427 100644
--- a/rpm/obdevtools-gcc9-build.sh
+++ b/rpm/obdevtools-gcc9-build.sh
@@ -3,7 +3,7 @@
 CUR_DIR=$(dirname $(readlink -f "$0"))
 ROOT_DIR=$CUR_DIR/../
 PROJECT_DIR=${1:-"$CUR_DIR"}
-PROJECT_NAME=${2:-"obdevtools-gcc"}
+PROJECT_NAME=${2:-"obdevtools-gcc9"}
 VERSION=${3:-"9.3.0"}
 RELEASE=${4:-"1"}
 
@@ -26,4 +26,4 @@ if [[ x"$OS_RELEASE" == x"7" ]]; then
 fi
 
 cd $CUR_DIR
-bash $CUR_DIR/rpmbuild.sh $PROJECT_DIR $PROJECT_NAME $VERSION $RELEASE
\ No newline at end of file
+bash $CUR_DIR/rpmbuild.sh $PROJECT_DIR $PROJECT_NAME $VERSION $RELEASE