diff --git a/01/title.txt b/01/title.txt
index 7f596a0..cacf7d7 100644
--- a/01/title.txt
+++ b/01/title.txt
@@ -1 +1 @@
-Chapter 1
\ No newline at end of file
+Tangi 1
\ No newline at end of file
diff --git a/02/title.txt b/02/title.txt
index bfab5a0..08f8af9 100644
--- a/02/title.txt
+++ b/02/title.txt
@@ -1 +1 @@
-Chapter 2
\ No newline at end of file
+Tangi 2
\ No newline at end of file
diff --git a/04/title.txt b/04/title.txt
index b034ce1..e1f21b5 100644
--- a/04/title.txt
+++ b/04/title.txt
@@ -1 +1 @@
-Tag 4
\ No newline at end of file
+Tangi 4
\ No newline at end of file
diff --git a/manifest.json b/manifest.json
index 324cfb8..a372bcd 100644
--- a/manifest.json
+++ b/manifest.json
@@ -70,6 +70,7 @@
 		"03-15",
 		"03-17",
 		"03-20",
+		"04-title",
 		"04-01",
 		"04-04",
 		"04-08",