diff --git a/external/entt b/external/entt
index 344e03a..d4014c7 160000
--- a/external/entt
+++ b/external/entt
@@ -1 +1 @@
-Subproject commit 344e03ac64a1f78424ab1150e2d4778e8df8431d
+Subproject commit d4014c74dc3793aba95ae354d6e23a026c2796db
diff --git a/framework/imgui/src/mm/services/scene_tools.cpp b/framework/imgui/src/mm/services/scene_tools.cpp
index b3676ed..006a3a7 100644
--- a/framework/imgui/src/mm/services/scene_tools.cpp
+++ b/framework/imgui/src/mm/services/scene_tools.cpp
@@ -111,7 +111,7 @@ namespace MM::Services {
 			if (ImGui::Begin("Scene Metrics##ImGuiSceneToolsService", &_show_scene_metrics)) {
 				ImGui::Text("capacity: %zu", scene.storage<::MM::Entity>().capacity());
 				ImGui::Text("size: %zu", scene.storage<::MM::Entity>().size());
-				ImGui::Text("alive: %zu", scene.storage<::MM::Entity>().in_use());
+				ImGui::Text("alive: %zu", scene.storage<::MM::Entity>().free_list());
 				if (ImGui::CollapsingHeader("orphans")) {
 					// iterating all entities is expensive
 					size_t orphans = 0;
diff --git a/framework/organizer_scene/src/mm/services/organizer_scene.cpp b/framework/organizer_scene/src/mm/services/organizer_scene.cpp
index 3127931..74f7a56 100644
--- a/framework/organizer_scene/src/mm/services/organizer_scene.cpp
+++ b/framework/organizer_scene/src/mm/services/organizer_scene.cpp
@@ -23,7 +23,7 @@ static std::ostream& operator<<(std::ostream& out, const std::vector<entt::organ
 	}
 
 	for (size_t i = 0; i < nodes.size(); i++) {
-		for (const size_t child : nodes[i].children()) {
+		for (const size_t child : nodes[i].in_edges()) {
 			out << "n" << child << " -> " << "n" << i << ";\n";
 		}
 	}
diff --git a/systems/player_velocity/src/mm/systems/player_velocity2d_system.hpp b/systems/player_velocity/src/mm/systems/player_velocity2d_system.hpp
index 08dd9b5..a1544ce 100644
--- a/systems/player_velocity/src/mm/systems/player_velocity2d_system.hpp
+++ b/systems/player_velocity/src/mm/systems/player_velocity2d_system.hpp
@@ -4,6 +4,8 @@
 #include <mm/services/input_service.hpp>
 #include <mm/components/velocity2d_position_intent.hpp>
 
+#include <entt/entity/storage.hpp>
+
 namespace MM::Systems {
 
 	// this system transforms the input from the input_service into velocity intent
diff --git a/systems/simple_velocity/src/mm/systems/simple_velocity_system2d.hpp b/systems/simple_velocity/src/mm/systems/simple_velocity_system2d.hpp
index 1e1a564..d0c55d1 100644
--- a/systems/simple_velocity/src/mm/systems/simple_velocity_system2d.hpp
+++ b/systems/simple_velocity/src/mm/systems/simple_velocity_system2d.hpp
@@ -7,6 +7,7 @@
 #include <mm/components/time_delta.hpp>
 
 #include <entt/fwd.hpp>
+#include <entt/entity/storage.hpp>
 
 namespace MM::Systems {