diff --git a/src/ObjLoading/Game/IW4/Leaderboard/JsonLeaderboardDefLoader.cpp b/src/ObjLoading/Game/IW4/Leaderboard/JsonLeaderboardDefLoader.cpp
index 431001a2..3a90565d 100644
--- a/src/ObjLoading/Game/IW4/Leaderboard/JsonLeaderboardDefLoader.cpp
+++ b/src/ObjLoading/Game/IW4/Leaderboard/JsonLeaderboardDefLoader.cpp
@@ -3,6 +3,7 @@
 #include "Game/IW4/CommonIW4.h"
 #include "Game/IW4/Leaderboard/JsonLeaderboardDef.h"
 
+#include <format>
 #include <iostream>
 #include <nlohmann/json.hpp>