diff --git a/build.sbt b/build.sbt
index 607ab05..ceb403c 100644
--- a/build.sbt
+++ b/build.sbt
@@ -5,5 +5,5 @@ scalaVersion := "2.13.15"
 gitbucketVersion := "4.41.0"
 scalacOptions ++= Seq(
   "-deprecation",
-  "-Xsource:3",
+  "-Xsource:3-cross",
 )