diff --git a/main/src/main/scala/sbt/internal/LintUnused.scala b/main/src/main/scala/sbt/internal/LintUnused.scala
index af7645504..17bb15924 100644
--- a/main/src/main/scala/sbt/internal/LintUnused.scala
+++ b/main/src/main/scala/sbt/internal/LintUnused.scala
@@ -32,6 +32,7 @@ object LintUnused {
       concurrentRestrictions,
       commands,
       crossScalaVersions,
+      crossSbtVersions,
       initialize,
       lintUnusedKeysOnLoad,
       onLoad,