diff --git a/build.sbt b/build.sbt
index 38f417d1..f0b34e20 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 import scala.util.matching.Regex.{Groups, Match}
 
-crossScalaVersions := Seq("2.11.12", "2.12.4")
+crossScalaVersions := Seq("2.11.12", "2.12.19")
 
 lazy val covariant = crossProject.crossType(CrossType.Pure)