diff --git a/README.md b/README.md
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--- a/README.md
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@@ -127,6 +127,7 @@
 * [**JavaScript**: _Dagoba: an in-memory graph database_](http://aosabook.org/en/500L/dagoba-an-in-memory-graph-database.html)
 * [**Python**: _DBDB: Dog Bed Database_](http://aosabook.org/en/500L/dbdb-dog-bed-database.html)
 * [**Python**: _Write your own miniature Redis with Python_](http://charlesleifer.com/blog/building-a-simple-redis-server-with-python/)
+* [**Ruby**: _Redis in Ruby_](https://redis.pjam.me/)
 
 #### Build your own `Docker`