diff --git a/compile/persist/src/main/scala/sbt/inc/AnalysisFormats.scala b/compile/persist/src/main/scala/sbt/inc/AnalysisFormats.scala
index cf6e05bd9..dc452565a 100644
--- a/compile/persist/src/main/scala/sbt/inc/AnalysisFormats.scala
+++ b/compile/persist/src/main/scala/sbt/inc/AnalysisFormats.scala
@@ -15,6 +15,7 @@ package inc
 	import Logger.{m2o, position, problem}
 	import Relations.{Source => RSource}
 
+@deprecated("Replaced by InternedAnalysisFormats. OK to remove in 0.14.", since="0.13.1")
 object AnalysisFormats
 {
 	type RFF = Relation[File, File]