diff --git a/manifest.json b/manifest.json
index d83a453..11883e8 100644
--- a/manifest.json
+++ b/manifest.json
@@ -102,6 +102,7 @@
 		"04-16",
 		"04-17",
 		"04-19",
+		"04-21",
 		"05-title",
 		"05-01",
 		"05-05",