Can't upgrade Xcode from 6.3.1 to 6.3.2
I found Xcode has a new version in App Store, but it didn't notice me to upgrade it.
I can see Xcode 6.3.2 in App Store but I can find an "upgrade" button to do it.
Also, there is no available updates exists.
Macbook Air (11-inch, 2013 middle)
OS X Yosemite 10.10.3
MacBook Air, OS X Yosemite (10.10.3)