diff --git a/main/src/main/scala/sbt/Defaults.scala b/main/src/main/scala/sbt/Defaults.scala
index 6e1a09000..4162c2d48 100755
--- a/main/src/main/scala/sbt/Defaults.scala
+++ b/main/src/main/scala/sbt/Defaults.scala
@@ -315,7 +315,7 @@ object Defaults extends BuildCommon {
       val extra =
         if (crossPaths.value) s"_${scalaBinaryVersion.value}"
         else ""
-      s"inc_compile${extra}"
+      s"inc_compile${extra}.zip"
     },
     compileIncSetup := compileIncSetupTask.value,
     console := consoleTask.value,
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 4df0c2c36..05ddd9490 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -12,7 +12,7 @@ object Dependencies {
   val ioVersion = "1.0.0-M6"
   val utilVersion = "0.1.0-M13"
   val librarymanagementVersion = "0.1.0-X1"
-  val zincVersion = "1.0.0-X2"
+  val zincVersion = "1.0.0-X3"
   lazy val sbtIO = "org.scala-sbt" %% "io" % ioVersion
   lazy val utilCollection = "org.scala-sbt" %% "util-collection" % utilVersion
   lazy val utilLogging = "org.scala-sbt" %% "util-logging" % utilVersion