diff --git a/21/title.txt b/21/title.txt
new file mode 100644
index 00000000..0577aa86
--- /dev/null
+++ b/21/title.txt
@@ -0,0 +1 @@
+Chapter 21
\ No newline at end of file
diff --git a/22/title.txt b/22/title.txt
index f6ba157d..66cb5e0c 100644
--- a/22/title.txt
+++ b/22/title.txt
@@ -1 +1 @@
-CHAPTER 22
\ No newline at end of file
+Chapter 22
\ No newline at end of file
diff --git a/23/title.txt b/23/title.txt
index 7c0a88e9..bc005c2f 100644
--- a/23/title.txt
+++ b/23/title.txt
@@ -1 +1 @@
-chapter 23
\ No newline at end of file
+Chapter 23
\ No newline at end of file
diff --git a/25/title.txt b/25/title.txt
index ef07fd30..bf06e9b6 100644
--- a/25/title.txt
+++ b/25/title.txt
@@ -1 +1 @@
-CHAPTER 25
\ No newline at end of file
+Chapter 25
\ No newline at end of file
diff --git a/manifest.json b/manifest.json
index 5541b4e0..d022fd92 100644
--- a/manifest.json
+++ b/manifest.json
@@ -349,6 +349,7 @@
 		"20-31",
 		"20-33",
 		"20-36",
+		"21-title",
 		"21-01",
 		"21-03",
 		"21-05",