- Go to http://spring.io/tools/sts/all and copy the URL from the Update Site you want.
For Eclipse Luna is http://dist.springsource.com/release/TOOLS/update/e4.4/
- Go to Eclipse and open
Help -> Install New Software
- Add the STS URL in Work with field
- From the list select
- Core / Eclipse Intergration for Gradle
- Groovy-Eclipse (for DSL Support)