diff --git a/src/entity_manager/overlay.cpp b/src/entity_manager/overlay.cpp
index ce41bca..f289715 100644
--- a/src/entity_manager/overlay.cpp
+++ b/src/entity_manager/overlay.cpp
@@ -9,12 +9,12 @@
 
 #include <boost/asio/io_context.hpp>
 #include <boost/asio/steady_timer.hpp>
-#include <boost/container/flat_map.hpp>
 #include <boost/container/flat_set.hpp>
 #include <nlohmann/json.hpp>
 #include <phosphor-logging/lg2.hpp>
 
 #include <filesystem>
+#include <flat_map>
 #include <fstream>
 #include <iomanip>
 #include <regex>