diff --git a/DIRECTORY.md b/DIRECTORY.md
index 48513cb..994dd6e 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -11,6 +11,8 @@
   * Linked Lists
     * [Double List](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/linked_lists/double_list.rb)
     * [Single List](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/linked_lists/single_list.rb)
+  * Queues
+    * [Queue](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/queues/queue.rb)
 
 ## Discrete Mathematics
   * [Euclidean Gcd](https://github.com/TheAlgorithms/Ruby/blob/master/discrete_mathematics/euclidean_gcd.rb)