diff --git a/build.sbt b/build.sbt
index db62f42..ddfe4ed 100644
--- a/build.sbt
+++ b/build.sbt
@@ -82,7 +82,7 @@
 scalacOptions ++= {
   scalaBinaryVersion.value match {
     case "2.13" =>
-      Seq("-Xsource:3")
+      Seq("-Xsource:3-cross")
     case _ =>
       Nil
   }