diff --git a/src/BitBoard.cpp b/src/BitBoard.cpp
index d573a2c..96b4341 100644
--- a/src/BitBoard.cpp
+++ b/src/BitBoard.cpp
@@ -5,6 +5,7 @@
 #include <cmath>
 #include <iostream>
 #include <memory>
+#include <bitset>
 #include "Move.h"
 #include "BitBoard.h"
 #include "Heuristic.hpp"