centos update svn client version
add source
/etc/yum.repos.d/wandisco-svn.repo
[WandiscoSVN]
name=Wandisco SVN Repo
baseurl=http://opensource.wandisco.com/centos/$releasever/svn-1.8/RPMS/$basearch/
enabled=1
gpgcheck=0
yum remove old packages
sudo yum remove subversion*
install new package
sudo yum install subversion
svn --version
svn upgrade