diff --git a/project/plugins.sbt b/project/plugins.sbt
index 3c7fb1497..767bccb53 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,6 +1,6 @@
 addSbtPlugin("org.scala-sbt" % "sbt-houserules" % "0.3.2")
 addSbtPlugin("com.eed3si9n"  % "sbt-doge"       % "0.1.3")
-addSbtPlugin("org.scala-sbt" % "sbt-contraband" % "0.3.0-M3")
+addSbtPlugin("org.scala-sbt" % "sbt-contraband" % "0.3.0-M4")
 addSbtPlugin("me.lessis"     % "bintray-sbt"    % "0.3.0")
 
 scalacOptions += "-language:postfixOps"
diff --git a/sbt-allsources.sh b/sbt-allsources.sh
new file mode 100755
index 000000000..1751f0fb9
--- /dev/null
+++ b/sbt-allsources.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+sbt -Dsbtio.path=../io -Dsbtutil.path=../util "$@"