diff --git a/manifest.json b/manifest.json
index 31ed874c1..0bfb170a5 100644
--- a/manifest.json
+++ b/manifest.json
@@ -333,7 +333,6 @@
 		"19-18",
 		"19-reference",
 		"20-title",
-		"20-01",
 		"20-02",
 		"20-03",
 		"20-04",