diff --git a/manifest.json b/manifest.json
index 65987de..d8c2051 100644
--- a/manifest.json
+++ b/manifest.json
@@ -223,6 +223,7 @@
 		"19-21",
 		"20-title",
 		"20-01",
+		"20-04",
 		"20-05",
 		"20-07",
 		"20-09",