diff --git a/db/migrate/20250912205016_change_default_involvement_to_access_only.rb b/db/migrate/20250912205016_change_default_involvement_to_access_only.rb
new file mode 100644
index 000000000..4cb575d23
--- /dev/null
+++ b/db/migrate/20250912205016_change_default_involvement_to_access_only.rb
@@ -0,0 +1,5 @@
+class ChangeDefaultInvolvementToAccessOnly < ActiveRecord::Migration[8.1]
+  def change
+    change_column_default :accesses, :involvement, "access_only"
+  end
+end