diff --git a/main/src/main/scala/sbt/Defaults.scala b/main/src/main/scala/sbt/Defaults.scala
index 274c7d21a..ceb89bff2 100755
--- a/main/src/main/scala/sbt/Defaults.scala
+++ b/main/src/main/scala/sbt/Defaults.scala
@@ -215,7 +215,7 @@ object Defaults extends BuildCommon {
       crossVersion :== Disabled(),
       buildDependencies := Classpaths.constructBuildDependencies.value,
       version :== "0.1.0-SNAPSHOT",
-      classpathTypes :== Set("jar", "bundle") ++ CustomPomParser.JarPackagings,
+      classpathTypes :== Set("jar", "bundle", "maven-plugin", "test-jar") ++ CustomPomParser.JarPackagings,
       artifactClassifier :== None,
       checksums := Classpaths.bootChecksums(appConfiguration.value),
       conflictManager := ConflictManager.default,