diff --git a/.travis.yml b/.travis.yml
index e51d6050b..97e278aec 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,13 +3,35 @@ sudo: false
 matrix:
   include:
     - scala: 2.10.6
-      script: ./sbt "+++$TRAVIS_SCALA_VERSION clean" "+++$TRAVIS_SCALA_VERSION scalafmtTest" "+++$TRAVIS_SCALA_VERSION test" "+++$TRAVIS_SCALA_VERSION mimaReportBinaryIssues"
+      script: ./sbt ++$TRAVIS_SCALA_VERSION clean scalafmtTest test mimaReportBinaryIssues
 
     - scala: 2.11.8
-      script: ./sbt "+++$TRAVIS_SCALA_VERSION clean" "+++$TRAVIS_SCALA_VERSION scalafmtTest" "+++$TRAVIS_SCALA_VERSION test" "+++$TRAVIS_SCALA_VERSION coverageReport" "+++$TRAVIS_SCALA_VERSION mimaReportBinaryIssues"
+      script: ./sbt ++$TRAVIS_SCALA_VERSION clean coverage scalafmtTest test coverageReport mimaReportBinaryIssues
+      after_success:
+        - bash <(curl -s https://codecov.io/bash)
 
-    - scala: 2.12.0
+    - scala: 2.12.1
       jdk: oraclejdk8
       script: ./sbt "+++$TRAVIS_SCALA_VERSION clean" "+++$TRAVIS_SCALA_VERSION test"
-      after_success:
-        - bash <(curl -s https://codecov.io/bash)
+
+cache:
+  directories:
+  - $HOME/.sbt/0.13/dependency
+  - $HOME/.sbt/boot/scala*
+  - $HOME/.sbt/launchers
+  - $HOME/.ivy2/cache
+  - $HOME/.nvm
+
+before_cache:
+  - du -h -d 1 $HOME/.ivy2/cache
+  - du -h -d 2 $HOME/.sbt/
+  - find $HOME/.sbt -name "*.lock" -type f -delete
+  - find $HOME/.ivy2/cache -name "ivydata-*.properties" -type f -delete
+
+notifications:
+  webhooks:
+    urls:
+      - https://webhooks.gitter.im/e/823bad727793c3cd3caf
+    on_success: change
+    on_failure: always
+    on_start: never
diff --git a/README.md b/README.md
index 1feeb0ba7..5f992876b 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,8 @@
-## Bijection [![Build Status](https://secure.travis-ci.org/twitter/bijection.png)](http://travis-ci.org/twitter/bijection) [![Codecov](https://img.shields.io/codecov/c/github/twitter/bijection.svg?maxAge=2592000)](https://codecov.io/github/twitter/bijection)
+## Bijection
+
+[![Build Status](https://secure.travis-ci.org/twitter/bijection.png)](http://travis-ci.org/twitter/bijection) [![Codecov](https://img.shields.io/codecov/c/github/twitter/bijection.svg?maxAge=2592000)](https://codecov.io/github/twitter/bijection)
+[![Latest version](https://index.scala-lang.org/twitter/bijection/bijection-core/latest.svg?color=orange)](https://index.scala-lang.org/twitter/bijection/bijection-core)
+[![Chat](https://badges.gitter.im/twitter/bijection.svg)](https://gitter.im/twitter/bijection?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 A Bijection is an invertible function that converts back and forth between two types, with
 the contract that a round-trip through the Bijection will bring back the original object. Moreover,
@@ -131,7 +135,7 @@ The latest ScalaDocs are hosted on Bijection's [Github Project Page](http://twit
 ## Get Involved + Code of Conduct
 Pull requests and bug reports are always welcome!
 
-Discussion occurs primarily on the [Bijection mailing list](https://groups.google.com/forum/#!forum/bijection). 
+Discussion occurs primarily on the [Bijection mailing list](https://groups.google.com/forum/#!forum/bijection).
 Issues should be reported on the [GitHub issue tracker](https://github.com/twitter/bijection/issues).
 
 We use a lightweight form of project governence inspired by the one used by Apache projects.
@@ -162,7 +166,7 @@ Current published artifacts are
 
 Every artifact is published against Scala `"2.10"` and `"2.11"`. We currently publish a subset of bijection's modules against Scala `"2.12"`.  Bijection modules - bijection-util and bijection-scrooge depend on other projects to publish 2.12 artifacts and currently aren't being published. To pull in the jars, make sure to add your desired scala version as a suffix, ie:
 
-`bijection-core_2.10` or `bijection-core_2.11` or `bijection-core_2.12`. 
+`bijection-core_2.10` or `bijection-core_2.11` or `bijection-core_2.12`.
 
 ## Chat
 [![Gitter](https://badges.gitter.im/twitter/bijection.svg)](https://gitter.im/twitter/bijection?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
diff --git a/build.sbt b/build.sbt
index f2b5e160b..0d726c097 100644
--- a/build.sbt
+++ b/build.sbt
@@ -5,13 +5,25 @@ import com.typesafe.sbt.osgi.SbtOsgi.autoImport._
 import ReleaseTransformations._ // for sbt-release.
 import bijection._
 
+val finagleVersion = "6.25.0"
+val scalatestVersion = "3.0.1"
+val scalacheckVersion = "1.13.4"
+val utilVersion = "6.34.0"
+val utilVersion212 = "6.39.0"
+
+def util(mod: String, scalaVersion: String) = {
+  val version =
+    if (scalaVersion startsWith "2.12") utilVersion212
+    else utilVersion
+  "com.twitter" %% (s"util-$mod") % version
+}
+
 val buildLevelSettings = Seq(
   organization := "com.twitter",
-  crossScalaVersions := Seq("2.10.6", "2.11.8", "2.12.0"),
+  crossScalaVersions := Seq("2.10.6", "2.11.8", "2.12.1"),
   javacOptions ++= Seq("-source", "1.6", "-target", "1.6"),
   javacOptions in doc := Seq("-source", "1.6"),
   scalaVersion := "2.11.8",
-  coverageEnabled := (if (scalaVersion.value startsWith "2.11") true else false),
   scalacOptions ++= Seq(
     "-unchecked",
     "-deprecation",
@@ -33,8 +45,8 @@ val buildLevelSettings = Seq(
     "releases" at "https://oss.sonatype.org/content/repositories/releases"
   ),
   libraryDependencies ++= Seq(
-    "org.scalacheck" %% "scalacheck" % "1.13.4" % "test",
-    "org.scalatest" %% "scalatest" % "3.0.1" % "test"
+    "org.scalacheck" %% "scalacheck" % scalacheckVersion % "test",
+    "org.scalatest" %% "scalatest" % scalatestVersion % "test"
   ),
   parallelExecution in Test := true,
   homepage := Some(url("https://github.com/twitter/bijection")),
@@ -140,8 +152,8 @@ lazy val bijection = {
   Project(
     id = "bijection",
     base = file("."),
-    settings = buildLevelSettings ++ sharedSettings 
-  ).enablePlugins(DocGen, SbtOsgi, CrossPerProjectPlugin)
+    settings = buildLevelSettings ++ sharedSettings
+  ).enablePlugins(SbtOsgi, CrossPerProjectPlugin)
   .settings(
     test := {},
     publish := {}, // skip publishing for this root project.
@@ -249,8 +261,8 @@ lazy val bijectionScrooge = {
     libraryDependencies ++= Seq(
       "org.apache.thrift" % "libthrift" % "0.6.1" exclude ("junit", "junit"),
       "com.twitter" %% "scrooge-serializer" % "3.17.0",
-      "com.twitter" %% "util-core" % "6.24.0",
-      "com.twitter" %% "finagle-core" % "6.25.0" % "test"
+      util("core", scalaVersion.value),
+      "com.twitter" %% "finagle-core" % finagleVersion % "test"
     )
   ).dependsOn(
     bijectionCore % "test->test;compile->compile",
@@ -270,9 +282,8 @@ lazy val bijectionJson = {
 
 lazy val bijectionUtil = {
   module("util").settings(
-    crossScalaVersions := crossScalaVersions.value.filterNot(_.startsWith("2.12")),
     osgiExportAll("com.twitter.bijection.twitter_util"),
-    libraryDependencies += "com.twitter" %% "util-core" % "6.24.0"
+    libraryDependencies += util("core", scalaVersion.value)
   ).dependsOn(
     bijectionCore % "test->test;compile->compile"
   )
@@ -283,8 +294,8 @@ lazy val bijectionFinagleMySql = {
     crossScalaVersions := crossScalaVersions.value.filterNot(_.startsWith("2.12")),
     osgiExportAll("com.twitter.bijection.finagle_mysql"),
     libraryDependencies ++= Seq(
-      "com.twitter" %% "finagle-mysql" % "6.25.0",
-      "com.twitter" %% "util-core" % "6.24.0"
+      "com.twitter" %% "finagle-mysql" % finagleVersion,
+      util("core", scalaVersion.value)
     )
   ).dependsOn(
     bijectionCore % "test->test;compile->compile"
diff --git a/project/DocGen.scala b/project/DocGen.scala
deleted file mode 100644
index 811f4dec3..000000000
--- a/project/DocGen.scala
+++ /dev/null
@@ -1,50 +0,0 @@
-package bijection
-
-import sbt._
-import Keys._
-
-import com.typesafe.sbt.git.GitRunner
-import com.typesafe.sbt.SbtGit.GitKeys
-import com.typesafe.sbt.SbtSite.{site, SiteKeys}
-import com.typesafe.sbt.SbtGhPages.{ghpages, GhPagesKeys => ghkeys}
-import com.typesafe.sbt.SbtGit.GitKeys.gitRemoteRepo
-
-object DocGen extends AutoPlugin {
-
-  override def requires = Unidoc
-
-  val docDirectory = "target/site"
-  val aggregateName = "bijection"
-
-  def syncLocal = Def.task {
-    val repo = ghkeys.updatedRepository.value
-    val git = GitKeys.gitRunner.value
-    cleanSite(repo, git, streams.value) // First, remove 'stale' files.
-    val rootPath = file(docDirectory) // Now copy files.
-    IO.copyDirectory(rootPath, repo)
-    IO.touch(repo / ".nojekyll")
-    repo
-  }
-
-  private def cleanSite(dir: File, git: GitRunner, s: TaskStreams): Unit = {
-    val toClean = IO.listFiles(dir).filterNot(_.getName == ".git").map(_.getAbsolutePath).toList
-    if (!toClean.isEmpty)
-      git(("rm" :: "-r" :: "-f" :: "--ignore-unmatch" :: toClean): _*)(dir, s.log)
-    ()
-  }
-
-  def unidocSettings: Seq[sbt.Setting[_]] =
-    site.includeScaladoc(docDirectory) ++ Seq(
-      scalacOptions in doc ++= {
-        val tagOrBranch = if (version.value.endsWith("-SNAPSHOT")) "develop" else version.value
-        val docSourceUrl = "https://github.com/twitter/" + aggregateName + "/tree/" + tagOrBranch + "€{FILE_PATH}.scala"
-        Seq("-sourcepath", baseDirectory.value.getAbsolutePath, "-doc-source-url", docSourceUrl)
-      },
-      Unidoc.unidocDirectory := file(docDirectory),
-      gitRemoteRepo := "git@github.com:twitter/" + aggregateName + ".git",
-      ghkeys.synchLocal := syncLocal.value
-    )
-
-  override def projectSettings = site.settings ++ ghpages.settings ++ unidocSettings
-
-}
diff --git a/project/Unidoc.scala b/project/Unidoc.scala
deleted file mode 100644
index 45230cde2..000000000
--- a/project/Unidoc.scala
+++ /dev/null
@@ -1,64 +0,0 @@
-package bijection
-
-import sbt._
-import sbt.Keys._
-import sbt.Project.Initialize
-
-/** Borrowed from https://github.com/akka/akka/blob/master/project/Unidoc.scala */
-object Unidoc extends AutoPlugin {
-
-  override def requires = plugins.JvmPlugin
-
-  val unidocDirectory = SettingKey[File]("unidoc-directory")
-  val unidocAllSources = TaskKey[Seq[File]]("unidoc-all-sources")
-  val unidocSources = TaskKey[Seq[File]]("unidoc-sources")
-  val unidocAllClasspaths = TaskKey[Seq[Classpath]]("unidoc-all-classpaths")
-  val unidocClasspath = TaskKey[Seq[File]]("unidoc-classpath")
-  val unidoc = TaskKey[File]("unidoc", "Create unified scaladoc for all aggregates")
-
-  override def projectSettings = Seq(
-    unidocDirectory := crossTarget.value / "unidoc",
-    unidocAllSources := Def.taskDyn {
-      val projectRef =  thisProjectRef.value
-      val structure = buildStructure.value
-      val projects = aggregated(projectRef, structure)
-      val compositeTask = projects.map { proj =>
-        (sources in (proj, Compile))
-      }.join
-      compositeTask
-    }.value.flatten,
-    unidocSources := unidocAllSources.value,
-    unidocAllClasspaths := Def.taskDyn {
-      val projectRef =  thisProjectRef.value
-      val structure = buildStructure.value
-      val projects = aggregated(projectRef, structure)
-      val compositeTask = projects.map { proj =>
-        (dependencyClasspath  in (proj, Compile))
-      }.join
-      compositeTask
-    }.value,
-    unidocClasspath := unidocAllClasspaths.value.flatten.map(_.data).distinct,
-    unidoc := {
-      val scaladoc = Doc.scaladoc("main", streams.value.cacheDirectory / "unidoc", compilers.value.scalac)
-      scaladoc(
-        unidocSources.value,
-        unidocClasspath.value,
-        unidocDirectory.value,
-        (scalacOptions in doc).value,
-        100,
-        streams.value.log
-      )
-      unidocDirectory.value
-    }
-  )
-
-  def aggregated(
-    projectRef: ProjectRef,
-    structure: BuildStructure
-  ): Seq[ProjectRef] = {
-    val maybeProject: Option[ResolvedProject] = Project.getProjectForReference(projectRef, structure)
-    val aggregatedRefs: Seq[ProjectRef] = maybeProject.toSeq.flatMap(_.aggregate)
-    aggregatedRefs flatMap { ref => ref +: aggregated(ref, structure) }
-  }
-
-}
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 3e2a5d056..3ff8bcaf1 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -2,11 +2,11 @@ resolvers ++= Seq(
   "jgit-repo" at "http://download.eclipse.org/jgit/maven"
 )
 
-addSbtPlugin("com.github.gseitz" % "sbt-release" % "1.0.3")
-addSbtPlugin("com.eed3si9n" % "sbt-doge" % "0.1.5")
-addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.0.0")
-addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.1.11")
-addSbtPlugin("com.typesafe.sbt" % "sbt-ghpages" % "0.5.4")
-addSbtPlugin("com.typesafe.sbt" % "sbt-osgi" % "0.8.0")
-addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.5.0")
-addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "1.1")
+addSbtPlugin("com.github.gseitz" % "sbt-release"     % "1.0.3")
+addSbtPlugin("com.eed3si9n"      % "sbt-doge"        % "0.1.5")
+addSbtPlugin("com.jsuereth"      % "sbt-pgp"         % "1.0.0")
+addSbtPlugin("com.typesafe"      % "sbt-mima-plugin" % "0.1.12")
+addSbtPlugin("com.typesafe.sbt"  % "sbt-ghpages"     % "0.5.4")
+addSbtPlugin("com.typesafe.sbt"  % "sbt-osgi"        % "0.8.0")
+addSbtPlugin("org.scoverage"     % "sbt-scoverage"   % "1.5.0")
+addSbtPlugin("org.xerial.sbt"    % "sbt-sonatype"    % "1.1")