The demands persisted till 1959, but the Punjab state government controlled by Indian National Congress advised against any modification of the boundary fixed by the Radcliffe Award. In 1969, on the occasion of the 500th birth anniversary of Guru Nanak, prime minister Indira Gandhi promised to approach the Pakistan government for a land-swap so that Kartarpur Sahib could become part of India.[19] None of this materialised. However in September 1974, a protocol was agreed between India and Pakistan for visits to religious shrines.[20] Around 2005, the protocol was updated by increasing the number of visits and the number of sites.[21] However, Kartarpur was never included among the sites included in the 1974 protocol.