diff --git a/cache/ChangeReport.scala b/cache/tracking/ChangeReport.scala
similarity index 100%
rename from cache/ChangeReport.scala
rename to cache/tracking/ChangeReport.scala
diff --git a/cache/DependencyTracking.scala b/cache/tracking/DependencyTracking.scala
similarity index 100%
rename from cache/DependencyTracking.scala
rename to cache/tracking/DependencyTracking.scala
diff --git a/cache/Tracked.scala b/cache/tracking/Tracked.scala
similarity index 100%
rename from cache/Tracked.scala
rename to cache/tracking/Tracked.scala
diff --git a/cache/TrackingFormat.scala b/cache/tracking/TrackingFormat.scala
similarity index 100%
rename from cache/TrackingFormat.scala
rename to cache/tracking/TrackingFormat.scala