diff --git a/free-programming-playgrounds.md b/free-programming-playgrounds.md
index 08a1a7ca..1edc75d8 100644
--- a/free-programming-playgrounds.md
+++ b/free-programming-playgrounds.md
@@ -194,6 +194,7 @@
 ### Ruby
 
 * [Codepad](http://codepad.org)
+* [Sololearn](https://code.sololearn.com/#rb)
 * [TryRuby](https://try.ruby-lang.org)