These main treaties (plus their attached protocols and declarations) have been altered by amending treaties at least once a decade since they each came into force, the latest being the Treaty of Lisbon which came into force in 2009.
這兩個條約（以及附加於其上的議定書和宣言）於它們正式生效後至少每10年必須要由修正條約予以調整和修正一次，目前最後一次用於修正它們的條約為2009年12月1日正式生效的《里斯本條約》。