diff --git a/data_structures/queue_using_array.cpp b/data_structures/queue_using_array.cpp
index 8b9b387c5..cbd84a623 100644
--- a/data_structures/queue_using_array.cpp
+++ b/data_structures/queue_using_array.cpp
@@ -18,6 +18,7 @@
  * @author [Farbod Ahmadian](https://github.com/farbodahm)
  */
 #include <array>     /// for std::array
+#include <cstdint>   /// for integral typedefs
 #include <iostream>  /// for io operations
 
 constexpr uint16_t max_size{10};  ///< Maximum size of the queue