diff --git a/db/migrate/20251203224022_add_collection_references_to_grid_items.rb b/db/migrate/20251203224022_add_collection_references_to_grid_items.rb
new file mode 100644
index 0000000..88311dd
--- /dev/null
+++ b/db/migrate/20251203224022_add_collection_references_to_grid_items.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+class AddCollectionReferencesToGridItems < ActiveRecord::Migration[8.0]
+  def change
+    add_reference :grid_characters, :collection_character,
+                  type: :uuid, foreign_key: true, null: true
+    add_reference :grid_weapons, :collection_weapon,
+                  type: :uuid, foreign_key: true, null: true
+    add_reference :grid_summons, :collection_summon,
+                  type: :uuid, foreign_key: true, null: true
+    add_reference :grid_artifacts, :collection_artifact,
+                  type: :uuid, foreign_key: true, null: true
+  end
+end