diff --git a/10/17.txt b/10/17.txt
index 45cd2ac..d066e04 100644
--- a/10/17.txt
+++ b/10/17.txt
@@ -1 +1 @@
-\v 17                    \v 18              \v 19         \v 20        
\ No newline at end of file
+\v 17                    \v 18              \v 19         \v 20        
\ No newline at end of file
diff --git a/10/21.txt b/10/21.txt
index de5359e..0ce7a89 100644
--- a/10/21.txt
+++ b/10/21.txt
@@ -1 +1 @@
-\v 21                          \v 22                \v 23         \v 24        
\ No newline at end of file
+\v 21                          \v 22                \v 23         \v 24        
\ No newline at end of file
diff --git a/manifest.json b/manifest.json
index 554558f..e823753 100644
--- a/manifest.json
+++ b/manifest.json
@@ -232,6 +232,7 @@
 		"10-11",
 		"10-14",
 		"10-17",
+		"10-21",
 		"10-25",
 		"10-29",
 		"10-31",