diff --git a/build.sbt b/build.sbt
index 1c4fc112..16ae433a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -2,6 +2,9 @@ import sbt.Keys._
 
 lazy val baseVersion = "3.5.9"
 
+lazy val akkaVersion = settingKey[String]("Version of Akka compiled against")
+akkaVersion := "2.3.0"
+
 // See crossrelease.sh for valid combinations of akkaVersion and crossScalaVersion.
 
 // Developed against 2.3.* (2.4.* for scala 2.12), see crossrelease.sh for all tested and build versions.
@@ -24,7 +27,7 @@ version := {
 description := {
   val av = akkaVersion.value
   val akkaDescription = if (av.nonEmpty) "Akka " + av +" and " else ""
-  "metrics-scala for " + akkaDescription + "Scala " + sbt.cross.CrossVersionUtil.binaryScalaVersion(scalaVersion.value)
+  "metrics-scala for " + akkaDescription + "Scala " + CrossVersion.binaryScalaVersion(scalaVersion.value)
 }
 
 // Developed against 2.11, see crossrelease.sh for all tested and build versions.
diff --git a/project/build.properties b/project/build.properties
index 64317fda..7c58a83a 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.15
+sbt.version=1.2.6
diff --git a/project/build.scala b/project/build.scala
deleted file mode 100644
index ceec5725..00000000
--- a/project/build.scala
+++ /dev/null
@@ -1,8 +0,0 @@
-import sbt._
-import Keys._
-
-object MetricsScalaBuild extends Build {
-  lazy val akkaVersion = settingKey[String]("Version of Akka compiled against")
-
-  akkaVersion := "2.3.0"
-}