diff --git a/project/OmnidocBuild.scala b/project/OmnidocBuild.scala
index 3e736c5..8a7cc7a 100644
--- a/project/OmnidocBuild.scala
+++ b/project/OmnidocBuild.scala
@@ -328,7 +328,7 @@ Compile / dependencyClasspath := dependencyClasspath.value, // Needed for Scala
       "-encoding",
       "UTF-8",
       "-source",
-      "11",
+      "17",
       
     )
   }