diff --git a/books/free-programming-books-langs.md b/books/free-programming-books-langs.md
index 36f5ee862..f0e04b69d 100644
--- a/books/free-programming-books-langs.md
+++ b/books/free-programming-books-langs.md
@@ -2318,7 +2318,6 @@ Books on general-purpose programming that don't focus on a specific language are
 * [Ruby Style Guide](https://github.com/airbnb/ruby) - Airbnb
 * [Ruby User's Guide](https://ruby-doc.org/docs/ruby-doc-bundle/UsersGuide/rg/index.html)
 * [Ruby Web Dev: The Other Way](https://leanpub.com/rwdtow/read) - Yevhen Kuzminov (HTML)
-* [Rubyfu](https://rubyfu.net)
 * [The Bastards Book of Ruby](http://ruby.bastardsbook.com)
 * [The Book Of Ruby](http://www.sapphiresteel.com/ruby-programming/The-Book-Of-Ruby.html) - Huw Collingbourne
 * [The Definitive Ruby Tutorial For Complete Beginners](https://www.rubyguides.com/ruby-tutorial/) - Jesus Castello