diff --git a/scala/build.sbt b/scala/build.sbt
index 6df3d754..d628c9f4 100644
--- a/scala/build.sbt
+++ b/scala/build.sbt
@@ -2,6 +2,7 @@ name := "GildedRose"
 
 version := "1.0"
 
-scalaVersion := "2.12.1"
+scalaVersion := "2.13.1"
 
-libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.1"
+resolvers += DefaultMavenRepository
+libraryDependencies += "org.scalatest" %% "scalatest" % "3.1.1" % "test"
diff --git a/scala/project/build.properties b/scala/project/build.properties
index d6e35076..06703e34 100644
--- a/scala/project/build.properties
+++ b/scala/project/build.properties
@@ -1 +1 @@
-sbt.version=1.1.6
+sbt.version=1.3.9
diff --git a/scala/src/test/scala/com/gildedrose/GildedRoseTest.scala b/scala/src/test/scala/com/gildedrose/GildedRoseTest.scala
index b1a4acc4..c0ce6b23 100644
--- a/scala/src/test/scala/com/gildedrose/GildedRoseTest.scala
+++ b/scala/src/test/scala/com/gildedrose/GildedRoseTest.scala
@@ -1,12 +1,13 @@
 package com.gildedrose
 
-import org.scalatest._
+import org.scalatest.flatspec.AnyFlatSpec
+import org.scalatest.matchers.should.Matchers
 
-class GildedRoseTest  extends FlatSpec with Matchers {
+class GildedRoseTest  extends AnyFlatSpec with Matchers {
       it should "foo" in {
-        var items = Array[Item](new Item("foo", 0, 0))
+        val items = Array[Item](new Item("foo", 0, 0))
         val app = new GildedRose(items)
         app.updateQuality()
-        (app.items(0).name) should equal ("fixme")
+        app.items(0).name should equal ("fixme")
       }
 }
\ No newline at end of file
diff --git a/scala/src/test/scala/com/gildedrose/TexttestFixture.scala b/scala/src/test/scala/com/gildedrose/TexttestFixture.scala
index 340bafad..1d00808c 100644
--- a/scala/src/test/scala/com/gildedrose/TexttestFixture.scala
+++ b/scala/src/test/scala/com/gildedrose/TexttestFixture.scala
@@ -2,7 +2,7 @@ package com.gildedrose
 
 object TexttestFixture {
   def main(args: Array[String]): Unit = {
-    var items = Array[Item](
+    val items = Array[Item](
       new Item("+5 Dexterity Vest", 10, 20),
       new Item("Aged Brie", 2, 0),
       new Item("Elixir of the Mongoose", 5, 7),