diff --git a/project/build/Samskivert.scala b/project/build/Samskivert.scala
index 0adeb13d..7afd0da9 100644
--- a/project/build/Samskivert.scala
+++ b/project/build/Samskivert.scala
@@ -2,10 +2,20 @@ import sbt._
 
 class Samskivert (info :ProjectInfo) extends DefaultProject(info)
 {
+  // interfaces JUnit with SBT, also adds JUnit4 dependency
   val junitInterface = "com.novocode" % "junit-interface" % "0.4" % "test->default"
 
+  // samskivert dependencies
+  val servlet = "javax.servlet" % "servlet-api" % "2.5"
+  val mail = "javax.mail" % "mail" % "1.4.1"
+  val collections = "commons-collections" % "commons-collections" % "3.2.1"
+  val digester = "commons-digester" % "commons-digester" % "2.0"
+  val log4j = "log4j" % "log4j" % "1.2.15" intransitive() // it depends on JMS, we don't
+
+  // exclude a test that looks like a test, but isn't
   override def testOptions = ExcludeTests("com.samskivert.util.IntSetTestBase" :: Nil) ::
     super.testOptions.toList
 
+  // set the test_dir system property, needed by some of the unit tests
   System.setProperty("test_dir", "target/scala_2.8.0/test-resources")
 }