diff --git a/.travis.yml b/.travis.yml
index dc8415a..a7d0599 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,7 +13,7 @@ script:
   - admin/build.sh
 scala:
   - 2.11.7
-  # - 2.12.0-M3
+  - 2.12.0-M3
 jdk:
   - oraclejdk8
 notifications:
diff --git a/build.sbt b/build.sbt
index 7209f4c..9c0d927 100644
--- a/build.sbt
+++ b/build.sbt
@@ -10,7 +10,7 @@ def jwrite(dir: java.io.File)(name: String, content: String) = {
 
 lazy val commonSettings = Seq(
   scalaVersion := "2.11.7",
-  crossScalaVersions := List("2.11.7" /* TODO, "2.12.0-M3"*/),
+  crossScalaVersions := List("2.11.7", "2.12.0-M3"),
   organization := "org.scala-lang.modules",
   version := "0.6.0-SNAPSHOT"
 )