diff --git a/build.sbt b/build.sbt
index 368f96d..e7bd3eb 100644
--- a/build.sbt
+++ b/build.sbt
@@ -56,6 +56,7 @@ javacOptions ++= Seq(
   "-encoding",
   "UTF-8",
 )
+doc / javacOptions := Seq("-source", "11")
 
 scalacOptions ++= Seq(
   "-release",