diff --git a/21/title.txt b/21/title.txt
new file mode 100644
index 0000000..c7270d7
--- /dev/null
+++ b/21/title.txt
@@ -0,0 +1 @@
+Capítulo 21
\ No newline at end of file
diff --git a/manifest.json b/manifest.json
index bc57819..454a847 100644
--- a/manifest.json
+++ b/manifest.json
@@ -346,6 +346,13 @@
 		"20-13",
 		"20-15",
 		"20-17",
-		"20-22"
+		"20-22",
+		"20-25",
+		"20-28",
+		"20-31",
+		"20-33",
+		"20-36",
+		"21-title",
+		"21-01"
 	]
 }
\ No newline at end of file