diff --git a/data_structures/dsu_path_compression.cpp b/data_structures/dsu_path_compression.cpp
index 022e632a7..9dff7b40b 100644
--- a/data_structures/dsu_path_compression.cpp
+++ b/data_structures/dsu_path_compression.cpp
@@ -19,6 +19,7 @@
  */
 
 #include <cassert>   /// for assert
+#include <cstdint>   /// for integral typedefs
 #include <iostream>  /// for IO operations
 #include <vector>    /// for std::vector