diff --git a/project/build.properties b/project/build.properties

index 66ad72c..18297d2 100644

--- a/project/build.properties

+++ b/project/build.properties

@@ -1,1 +1,1 @@

-sbt.version=0.12.2

+sbt.version=0.13.1

diff --git a/project/build.scala b/project/build.scala

index 493f34a..df88528 100644

--- a/project/build.scala

+++ b/project/build.scala

@@ -8,45 +8,14 @@ import java.awt.Desktop

 import scala.collection.immutable.IndexedSeq

-import sbtrelease._

-import sbtrelease.ReleasePlugin._

-import sbtrelease.ReleasePlugin.ReleaseKeys._

-import sbtrelease.ReleaseStateTransformations._

-import sbtrelease.Utilities._

-

-import com.typesafe.sbt.pgp.PgpKeys._

-

-import com.typesafe.sbtosgi.OsgiPlugin._

-

-import sbtbuildinfo.Plugin._

-

-import com.typesafe.tools.mima.plugin.MimaPlugin.mimaDefaultSettings

-import com.typesafe.tools.mima.plugin.MimaKeys.previousArtifact

-

 object build extends Build {

   type Sett = Project.Setting[_]

-  lazy val publishSignedArtifacts = ReleaseStep(

-    action = st => {

-      val extracted = st.extract

-      val ref = extracted.get(thisProjectRef)

-      extracted.runAggregated(publishSigned in Global in ref, st)

-    },

-    check = st => {

-      // getPublishTo fails if no publish repository is set up.

-      val ex = st.extract

-      val ref = ex.get(thisProjectRef)

-      Classpaths.getPublishTo(ex.get(publishTo in Global in ref))

-      st

-    },

-    enableCrossBuild = true

-  )

-

-  lazy val standardSettings: Seq[Sett] = Defaults.defaultSettings ++ sbtrelease.ReleasePlugin.releaseSettings ++ Seq[Sett](

+  lazy val standardSettings: Seq[Sett] = Defaults.defaultSettings ++ Seq[Sett](

     organization := "org.scalaz",

-    scalaVersion := "2.9.2",

-    crossScalaVersions := Seq("2.9.2", "2.9.3", "2.10.0"),

+    scalaVersion := "2.10.3",

+    crossScalaVersions := Seq(),

     resolvers += Resolver.sonatypeRepo("releases"),

     scalacOptions <++= (scalaVersion) map { sv =>

@@ -99,21 +68,6 @@ object build extends Build {

     publishSetting,

     publishArtifact in Test := false,

-    // adapted from sbt-release defaults

-    // (performs `publish-signed` instead of `publish`)

-    releaseProcess := Seq[ReleaseStep](

-      checkSnapshotDependencies,

-      inquireVersions,

-      runTest,

-      setReleaseVersion,

-      commitReleaseVersion,

-      tagRelease,

-      publishSignedArtifacts,

-      setNextVersion,

-      commitNextVersion,

-      pushChanges

-    ),

-

     pomIncludeRepository := {

       x => false

     },

@@ -154,10 +108,6 @@ object build extends Build {

         }

         </developers>

       )

-  ) ++ osgiSettings ++ Seq[Sett](

-    OsgiKeys.additionalHeaders := Map("-removeheaders" -> "Include-Resource,Private-Package")

-  ) ++ mimaDefaultSettings ++ Seq[Sett](

-    previousArtifact <<= (organization, name, scalaBinaryVersion) { (o, n, sbv) => Some(o % (n + "_" + sbv) % "7.0.0-RC2") }

   )

   lazy val scalaz = Project(

@@ -166,7 +116,6 @@ object build extends Build {

     settings = standardSettings ++ Unidoc.settings ++ Seq[Sett](

       // <https://github.com/scalaz/scalaz/issues/261>

       Unidoc.unidocExclude += "typelevel",

-      previousArtifact := None,

       publishArtifact := false

     ),

     aggregate = Seq(core, concurrent, effect, example, iterv, iteratee, scalacheckBinding, tests, typelevel, xml)

@@ -175,17 +124,12 @@ object build extends Build {

   lazy val core = Project(

     id = "core",

     base = file("core"),

-    settings = standardSettings ++ buildInfoSettings ++ Seq[Sett](

+    settings = standardSettings ++ Seq[Sett](

       name := "scalaz-core",

       typeClasses := TypeClass.core,

       sourceGenerators in Compile <+= (sourceManaged in Compile) map {

         dir => Seq(generateTupleW(dir))

-      },

-      sourceGenerators in Compile <+= buildInfo,

-      buildInfoKeys := Seq[BuildInfoKey](version, scalaVersion),

-      buildInfoPackage := "scalaz",

-      osgiExport("scalaz"),

-      OsgiKeys.importPackage := Seq("javax.swing;resolution:=optional", "*")

+      }

     )

   )

@@ -194,9 +138,7 @@ object build extends Build {

     base = file("concurrent"),

     settings = standardSettings ++ Seq[Sett](

       name := "scalaz-concurrent",

-      typeClasses := TypeClass.concurrent,

-      osgiExport("scalaz.concurrent"),

-      OsgiKeys.importPackage := Seq("javax.swing;resolution:=optional", "*")

+      typeClasses := TypeClass.concurrent

     ),

     dependencies = Seq(core, effect)

   )

@@ -206,8 +148,7 @@ object build extends Build {

     base = file("effect"),

     settings = standardSettings ++ Seq[Sett](

       name := "scalaz-effect",

-      typeClasses := TypeClass.effect,

-      osgiExport("scalaz.effect", "scalaz.std.effect", "scalaz.syntax.effect")

+      typeClasses := TypeClass.effect

     ),

     dependencies = Seq(core)

   )

@@ -216,8 +157,7 @@ object build extends Build {

     id = "iteratee",

     base = file("iteratee"),

     settings = standardSettings ++ Seq[Sett](

-      name := "scalaz-iteratee",

-      osgiExport("scalaz.iteratee")

+      name := "scalaz-iteratee"

     ),

     dependencies = Seq(effect)

   )

@@ -226,9 +166,7 @@ object build extends Build {

     id = "iterv",

     base = file("iterv"),

     settings = standardSettings ++ Seq[Sett](

-      name := "scalaz-iterv",

-      OsgiKeys.fragmentHost := Some("org.scalaz.core"),

-      OsgiKeys.exportPackage := Seq("scalaz;version=${Bundle-Version};-split-package:=first")

+      name := "scalaz-iterv"

     ),

     dependencies = Seq(effect)

   )

@@ -237,8 +175,7 @@ object build extends Build {

     id = "typelevel",

     base = file("typelevel"),

     settings = standardSettings ++ Seq[Sett](

-      name := "scalaz-typelevel",

-      osgiExport("scalaz.typelevel", "scalaz.syntax.typelevel")

+      name := "scalaz-typelevel"

     ),

     dependencies = Seq(core)

   )

@@ -248,8 +185,7 @@ object build extends Build {

     base = file("xml"),

     settings = standardSettings ++ Seq[Sett](

       name := "scalaz-xml",

-      typeClasses := TypeClass.xml,

-      osgiExport("scalaz.xml")

+      typeClasses := TypeClass.xml

     ),

     dependencies = Seq(core)

   )

@@ -260,7 +196,6 @@ object build extends Build {

     dependencies = Seq(core, iteratee, concurrent, typelevel, xml),

     settings = standardSettings ++ Seq[Sett](

       name := "scalaz-example",

-      previousArtifact := None,

       publishArtifact := false

     )

   )

@@ -271,8 +206,7 @@ object build extends Build {

     dependencies = Seq(core, concurrent, typelevel, xml),

     settings     = standardSettings ++ Seq[Sett](

       name := "scalaz-scalacheck-binding",

-      libraryDependencies += "org.scalacheck" %% "scalacheck" % "1.10.0",

-      osgiExport("scalaz.scalacheck")

+      libraryDependencies += "org.scalacheck" %% "scalacheck" % "1.10.0"

     )

   )

@@ -283,7 +217,6 @@ object build extends Build {

     settings = standardSettings ++Seq[Sett](

       name := "scalaz-tests",

       publishArtifact := false,

-      previousArtifact := None,

       libraryDependencies <++= (scalaVersion) { sv => Seq(

         "org.specs2" %% "specs2" % Dependencies.specs2(sv) % "test",

         "org.scalacheck" %% "scalacheck" % "1.10.0" % "test"

@@ -392,7 +325,6 @@ object build extends Build {

     writeFileScalazPackage("TupleOps.scala", source)

   }

-  def osgiExport(packs: String*) = OsgiKeys.exportPackage := packs.map(_ + ".*;version=${Bundle-Version}")

 }

 // vim: expandtab:ts=2:sw=2

diff --git a/project/plugins.sbt b/project/plugins.sbt

index e83215b..8901d19 100644

--- a/project/plugins.sbt

+++ b/project/plugins.sbt

@@ -1,11 +1,11 @@

-resolvers += Resolver.url("scalasbt", new URL("http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases"))(Resolver.ivyStylePatterns)

+// resolvers += Resolver.url("scalasbt", new URL("http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases"))(Resolver.ivyStylePatterns)

-addSbtPlugin("com.typesafe.sbt" % "sbt-pgp" % "0.8")

+// addSbtPlugin("com.typesafe.sbt" % "sbt-pgp" % "0.8")

-addSbtPlugin("com.github.gseitz" % "sbt-release" % "0.7")

+// addSbtPlugin("com.github.gseitz" % "sbt-release" % "0.7")

-addSbtPlugin("com.typesafe.sbtosgi" % "sbtosgi" % "0.3.0")

+// addSbtPlugin("com.typesafe.sbtosgi" % "sbtosgi" % "0.3.0")

-addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.2.2")

+// addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.2.2")

-addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.1.4")

+// addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.1.4")