diff --git a/binding-sandbox/bitmap-binding.h b/binding-sandbox/bitmap-binding.h
index 058328cf..1998d6c7 100644
--- a/binding-sandbox/bitmap-binding.h
+++ b/binding-sandbox/bitmap-binding.h
@@ -193,7 +193,7 @@ namespace mkxp_sandbox {
                     BOOST_ASIO_CORO_REENTER (this) {
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Rect");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, new Rect(get_private_data<Bitmap>(self)->rect()));
                     }
 
@@ -216,7 +216,7 @@ namespace mkxp_sandbox {
                         SANDBOX_AWAIT_AND_SET(str, rb_string_value_cstr, &text);
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Rect");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, new Rect(get_private_data<Bitmap>(self)->textSize((const char *)(**sb() + str))));
                     }
 
diff --git a/binding-sandbox/font-binding.h b/binding-sandbox/font-binding.h
index 01c82988..83e74d6f 100644
--- a/binding-sandbox/font-binding.h
+++ b/binding-sandbox/font-binding.h
@@ -40,7 +40,7 @@ namespace mkxp_sandbox {
                     BOOST_ASIO_CORO_REENTER (this) {
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Color");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, new Color());
                         SANDBOX_AWAIT(rb_iv_set, self, "color", obj);
                     }
diff --git a/binding-sandbox/plane-binding.h b/binding-sandbox/plane-binding.h
index 3501c601..be082d18 100644
--- a/binding-sandbox/plane-binding.h
+++ b/binding-sandbox/plane-binding.h
@@ -68,13 +68,13 @@ namespace mkxp_sandbox {
 
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Color");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, &plane->getColor());
                         SANDBOX_AWAIT(rb_iv_set, self, "color", obj);
 
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Tone");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, &plane->getTone());
                         SANDBOX_AWAIT(rb_iv_set, self, "tone", obj);
 
diff --git a/binding-sandbox/sprite-binding.h b/binding-sandbox/sprite-binding.h
index 59038808..53d16d5b 100644
--- a/binding-sandbox/sprite-binding.h
+++ b/binding-sandbox/sprite-binding.h
@@ -63,19 +63,19 @@ namespace mkxp_sandbox {
 
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Rect");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, &sprite->getSrcRect());
                         SANDBOX_AWAIT(rb_iv_set, self, "src_rect", obj);
 
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Color");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, &sprite->getColor());
                         SANDBOX_AWAIT(rb_iv_set, self, "color", obj);
 
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Tone");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, &sprite->getTone());
                         SANDBOX_AWAIT(rb_iv_set, self, "tone", obj);
 
diff --git a/binding-sandbox/tilemap-binding.h b/binding-sandbox/tilemap-binding.h
index ee9e2929..19a0d76d 100644
--- a/binding-sandbox/tilemap-binding.h
+++ b/binding-sandbox/tilemap-binding.h
@@ -144,19 +144,19 @@ namespace mkxp_sandbox {
 
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "TilemapAutotiles");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, &tilemap->getAutotiles());
                         SANDBOX_AWAIT(rb_iv_set, self, "autotiles", obj);
 
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Color");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, &tilemap->getColor());
                         SANDBOX_AWAIT(rb_iv_set, self, "color", obj);
 
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Tone");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, &tilemap->getTone());
                         SANDBOX_AWAIT(rb_iv_set, self, "tone", obj);
 
diff --git a/binding-sandbox/viewport-binding.h b/binding-sandbox/viewport-binding.h
index f21addd0..b0b9a6a1 100644
--- a/binding-sandbox/viewport-binding.h
+++ b/binding-sandbox/viewport-binding.h
@@ -65,19 +65,19 @@ namespace mkxp_sandbox {
 
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Rect");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, &viewport->getRect());
                         SANDBOX_AWAIT(rb_iv_set, self, "rect", obj);
 
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Color");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, &viewport->getColor());
                         SANDBOX_AWAIT(rb_iv_set, self, "color", obj);
 
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Tone");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(obj, rb_obj_alloc, klass);
                         set_private_data(obj, &viewport->getTone());
                         SANDBOX_AWAIT(rb_iv_set, self, "tone", obj);
 
diff --git a/binding-sandbox/window-binding.h b/binding-sandbox/window-binding.h
index 94682184..9b1ff5e3 100644
--- a/binding-sandbox/window-binding.h
+++ b/binding-sandbox/window-binding.h
@@ -61,7 +61,7 @@ namespace mkxp_sandbox {
                         window->initDynAttribs();
                         SANDBOX_AWAIT_AND_SET(id, rb_intern, "Rect");
                         SANDBOX_AWAIT_AND_SET(klass, rb_const_get, sb()->rb_cObject(), id);
-                        SANDBOX_AWAIT_AND_SET(cursor_obj, rb_class_new_instance, 0, NULL, klass);
+                        SANDBOX_AWAIT_AND_SET(cursor_obj, rb_obj_alloc, klass);
                         set_private_data(cursor_obj, &window->getCursorRect());
                         SANDBOX_AWAIT(rb_iv_set, self, "cursor_rect", cursor_obj);
                         GFX_UNLOCK