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@@ -390,7 +390,7 @@ It's a great way to learn.
 * [**JavaScript**: _Understanding JavaScript Micro-Templating_](https://medium.com/wdstack/understanding-javascript-micro-templating-f37a37b3b40e)
 * [**Python**: _Approach: Building a toy template engine in Python_](http://alexmic.net/building-a-template-engine/)
 * [**Python**: _A Template Engine_](http://aosabook.org/en/500L/a-template-engine.html)
-* [**Ruby**: _How to write a template engine in less than 30 lines of code_](http://bits.citrusbyte.com/how-to-write-a-template-library/)
+* [**Ruby**: _How to write a template engine in less than 30 lines of code_](https://web.archive.org/web/20180913134144/http://bits.citrusbyte.com/how-to-write-a-template-library/)
 
 #### Build your own `Text Editor`