diff --git a/amm/repl/src/test/scala-2.12/ammonite/unit/SourceTests212.scala b/amm/repl/src/test/scala-2.12/ammonite/unit/SourceTests212.scala
index dd6d1d47f..d5531c856 100644
--- a/amm/repl/src/test/scala-2.12/ammonite/unit/SourceTests212.scala
+++ b/amm/repl/src/test/scala-2.12/ammonite/unit/SourceTests212.scala
@@ -124,7 +124,7 @@ object SourceTests212 extends TestSuite {
         // Some aliases the make our code shorter
         import scalaz.==>>
         implicit val scalazOrder: scalaz.Order[Int] = scalaz.Order.fromScalaOrdering(Ordering[Int])
-        implicit val scalazShow: scalaz.Show[Int] = scalaz.Show.show[Int](_.toString)
+        implicit val scalazShow: scalaz.Show[Int] = scalaz.Show.show[Int](n => scalaz.Cord(n.toString))
         type I = Int
         test("empty") - check(load(==>>.empty[I, I] _), "Map.scala", "final def empty")
         test("singleton") - check(load(==>>.singleton[I, I] _), "Map.scala", "final def singleton")
diff --git a/build.mill b/build.mill
index 49ab69ae8..8d1b60c40 100644
--- a/build.mill
+++ b/build.mill
@@ -135,7 +135,7 @@ object Deps {
       else "2.0.1"
     mvn"org.scala-lang.modules::scala-xml:$ver"
   }
-  val scalazCore = mvn"org.scalaz::scalaz-core:7.2.36"
+  val scalazCore = mvn"org.scalaz::scalaz-core:7.3.8"
   val semanticDbScalac = mvn"org.scalameta:::semanticdb-scalac:$scalametaVersion"
   val shapeless = mvn"com.chuusai::shapeless:2.3.3"
   val slf4jNop = mvn"org.slf4j:slf4j-nop:2.0.16"