Sbt: why does it need scala-lang 2.10.3?

My build.sbt: ``` import android.Keys._ android.Plugin.androidBuild name := "teacher-journal" scalaVersion := "2.11.0" proguardCache in Android ++= Seq( ProguardCache("org.scaloid") % "org.scaloid" ) proguardOptions in Android ++= Seq("-dontobfuscate", "-dontoptimize", "-dontwarn scala.collection.mutable.**") libraryDependencies += "org.scaloid" %% "scaloid" % "3.3-8" scalacOptions in Compile += "-feature" run <<= run in Android install <<= install in Android ``` It gives me an error: ``` [warn] :::::::::::::::::::::::::::::::::::::::::::::: [warn] :: UNRESOLVED DEPENDENCIES :: [warn] :::::::::::::::::::::::::::::::::::::::::::::: [warn] :: org.scala-lang#scala-library;2.10.3: configuration not found in org.scala-lang#scala-library;2.10.3: 'compile'. It was required from default#teacher-journal-build;0.1-SNAPSHOT provided [warn] :::::::::::::::::::::::::::::::::::::::::::::: sbt.ResolveException: unresolved dependency: org.scala-lang#scala-library;2.10.3: configuration not found in org.scala-lang#scala-library;2.10.3: 'compile'. It was required from default#teacher-journal-build;0.1-SNAPSHOT provided ``` Sbt 0.13.2, system scala 2.10.2, java 8, fedora 20. Why does it need scala 2.10.3 and how to fix an error? Everything works for my friend with similar configuration on Ubuntu.