diff --git a/build.sbt b/build.sbt
index 744bb77..f87ce50 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,18 +4,31 @@ version := "2.0-SNAPSHOT"
 
 organization := "org.scalanlp"
 
-scalaVersion := "2.11.8"
+scalaVersion := scalaVersion_2_11
 
 licenses := Seq("Apache-2.0" -> url("http://www.apache.org/licenses/LICENSE-2.0"))
 
-//crossScalaVersions := Seq("2.10.6", "2.11.7")
+crossScalaVersions := Seq(scalaVersion_2_10, scalaVersion_2_11, scalaVersion_2_12)
 
 libraryDependencies ++= Seq(
-  "org.scala-graph" %% "graph-core" % "1.11.4",
   "org.rogach" %% "scallop" % "2.0.6",
-  "org.scalatest" % "scalatest_2.10" % "1.9.1" % "test"
+  "org.scalatest" %% "scalatest" % "3.0.3" % "test"
 )
 
+libraryDependencies += scalaVersion {
+  // Versions of graph-core higher than 1.10.0 are not published for scala-2.10.
+  case `scalaVersion_2_10` => "com.assembla.scala-incubator" %% "graph-core" % "1.10.0"
+  case _                   => "org.scala-graph" %% "graph-core" % "1.11.4"
+}.value
+
+
 enablePlugins(JavaAppPackaging)
 
 mainClass in Compile := Some("junto.Junto")
+
+lazy val scalaVersion_2_10 = "2.10.6"
+
+lazy val scalaVersion_2_11 = "2.11.11"
+
+lazy val scalaVersion_2_12 = "2.12.2"
+