diff --git a/bit_manipulation/power_of_2.cpp b/bit_manipulation/power_of_2.cpp
index c62bfdaa3..14092e895 100644
--- a/bit_manipulation/power_of_2.cpp
+++ b/bit_manipulation/power_of_2.cpp
@@ -16,6 +16,7 @@
  */
 
 #include <cassert>   /// for assert
+#include <cstdint>   /// for integral typedefs
 #include <iostream>  /// for IO operations
 
 /**