diff --git a/include/s0076_minimum_window_substring.hpp b/include/s0076_minimum_window_substring.hpp
index f085698..2d73bff 100644
--- a/include/s0076_minimum_window_substring.hpp
+++ b/include/s0076_minimum_window_substring.hpp
@@ -3,6 +3,7 @@
 
 #include <string>
 #include <unordered_map>
+#include <climits>
 
 using namespace std;