diff --git a/manifest.json b/manifest.json
index b31698e60..fa87314a3 100644
--- a/manifest.json
+++ b/manifest.json
@@ -435,6 +435,7 @@
 		"27-11",
 		"27-reference",
 		"28-title",
+		"28-01",
 		"28-02",
 		"28-03",
 		"28-04",