Upgrade SVN client in OS X

1. In Terminal, type "svn --version" to find out what version you currently have on OS X
2. Visit www.wandisco.com/subversion/download#osx and download the latest client for OS X and install it
   This will install the new svn into /opt/subversion/bin
3. Go to your terminal and check your $PATH by typing "echo $PATH"
   If you don't see /opt/subversion/bin in there, make sure you add it by adding this to your .bash_profile:
   export PATH=/opt/subversion/bin:$PATH (to do this I use the command "nano ~/.bash_profile")
4. If it DOES exist and appears AFTER /usr/bin, then you may need to remove an older copy of svn that came installed on OS X. To do so, go to /usr/bin and remove all files starting with svn. This isn't an exact science but it should do the trick.
5. Make sure you reload your .bash_profile first by typing "source ~/.bash_profile"
6. Type "svn --version". You should see that you have the newest version installed!

Credits:adapted from redfinsolutions.com/blog/update-subversion-mac-os-x

If you use Panic's Coda then you can update the SVN location in Preferences > Files

I was using svn that came bundled in Xcode:

/Applications/Xcode.app/Contents/Developer/usr/bin/svn

To:/opt/subversion/bin