IntelliJ Not Searching Maven Central Repo

Hello,

I'm trying to get started using IntelliJ and Gradle.  I created a new Gradle project and I want to add Spock support.  However, when I open build.gradle and hit CTRL+N -> Add maven artifact dependency I don't see spock or groovy in my list.  It looks like the Maven Central Repository isn't being queried.  I've tried clicking update on the remote Maven repository under Preferences->Maven->Repositories, but it didn't change anything. I'm on OS X 10.9 and have maven 3.1.1 instelled via brew. 

Thanks in advance for the help.