diff --git a/manifest.json b/manifest.json
index e3615e6..b9a1783 100644
--- a/manifest.json
+++ b/manifest.json
@@ -314,6 +314,7 @@
 		"20-14",
 		"20-16",
 		"20-19",
+		"21-title",
 		"21-01",
 		"21-04",
 		"21-07",