diff --git a/Makefile.am b/Makefile.am
index 57d0023..21b1a00 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -10,6 +10,7 @@ unstable_protocols =								\
 	$(NULL)
 
 stable_protocols =								\
+	stable/presentation-time/presentation-time.xml				\
 	$(NULL)
 
 nobase_dist_pkgdata_DATA =							\