diff --git a/project/build/XSbt.scala b/project/build/XSbt.scala
index 8c5c78370..676e847d0 100644
--- a/project/build/XSbt.scala
+++ b/project/build/XSbt.scala
@@ -193,7 +193,7 @@ class XSbt(info: ProjectInfo) extends ParentProject(info) with NoCrossPaths
 		
 		// sub projects for each version of Scala to precompile against other than the one sbt is built against
 		// each sub project here will add ~100k to the download
-		lazy val precompiled28 = precompiledSub("2.8.0.Beta1")
+		lazy val precompiled28 = precompiledSub("2.8.0.RC1")
 
 		def precompiledSub(v: String) = 
 			project(info.projectPath, "Precompiled " + v, new Precompiled(v)(_), cip.info.dependencies.toSeq : _* /*doesn't include subprojects of cip*/ )