The most recent modification happened in 2022 when King Hamad Al-Khalifa issued a decree-law adding the royal crown to the national emblem.
The General Maritime Treaty of 1820 gave Bahrain protected status (not as a protectorate of the United Kingdom).
[1] After the United Kingdom withdrew from Bahrain in 1971, red mantling with a white lining was added to the coat of arms as a symbol of the island nation's newly acquired independent sovereignty.
[1] The heraldic device has been most recently altered in 2002, when the emirate was declared a kingdom by Hamad ibn Isa Al Khalifa.
The shield remains red, but the white chief dancetée now includes five indentations to represent the five pillars of the Muslim faith, rather than the three as was originally assumed in 1932.