diff --git a/game/project.godot b/game/project.godot
index 064378a..16106b7 100644
--- a/game/project.godot
+++ b/game/project.godot
@@ -1,3 +1,11 @@
+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
+
 config_version=5
 
 [application]
@@ -5,5 +13,5 @@ config_version=5
 config/name="GDExtensionSummator"
 config/tags=PackedStringArray("gdextension", "template")
 run/main_scene="res://main.tscn"
-config/features=PackedStringArray("4.1")
+config/features=PackedStringArray("4.2")
 config/icon="res://icon.png"
diff --git a/godot-cpp b/godot-cpp
index d627942..7cd79e4 160000
--- a/godot-cpp
+++ b/godot-cpp
@@ -1 +1 @@
-Subproject commit d627942b647105aff600225a59dffa65de206247
+Subproject commit 7cd79e4cc64ce484ba04d1919da7d4cd39aab5ff