diff --git a/07_dijkstras_algorithm/c++11/01_dijkstras_algorithm.cpp b/07_dijkstras_algorithm/c++11/01_dijkstras_algorithm.cpp
index f0e069d..1d04a6d 100644
--- a/07_dijkstras_algorithm/c++11/01_dijkstras_algorithm.cpp
+++ b/07_dijkstras_algorithm/c++11/01_dijkstras_algorithm.cpp
@@ -1,3 +1,4 @@
+#include <algorithm>
 #include <iostream>
 #include <unordered_map>
 #include <string>