diff --git a/scripts/install.sh b/scripts/install.sh
index c608a8572..166989624 100755
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -14,6 +14,9 @@ mkdir -p /www/backup/database
 mkdir -p /www/backup/site
 
 
+yum provides '*/applydeltarpm'
+yum install deltarpm
+
 yum install -y wget curl unzip zip
 
 
@@ -32,6 +35,8 @@ pip install -r /www/server/mdserver-web/requirements.txt
 
 
 
+
+
 endTime=`date +%s`
 ((outTime=($endTime-$startTime)/60))
 echo -e "Time consumed:\033[32m $outTime \033[0mMinute!"
\ No newline at end of file