diff --git a/books/book_ideas.md b/books/book_ideas.md
index f924368c..6530272c 100644
--- a/books/book_ideas.md
+++ b/books/book_ideas.md
@@ -7,3 +7,4 @@
 - [ ] CVS by tutorials
 - [ ] Fortran for fun and profit
 - [x] RxSwift by tutorials
+- [x] Adjust Text To Merge