A member of the liberal Yabloko Party holds a poster reading: "You need to change the brain, not the constitution!" as he stages a one-man picket at the State Duma, the Lower House of the Russian Parliament in Moscow, Russia, Wednesday, March 11, 2020. The Russian parliament has approved a sweeping constitutional reform that will allow President Vladimir Putin to stay in power for another 12 years after his current term ends in 2024. Wednesday's vote was the third and final reading. (AP Photo/Pavel Golovkin)
A member of the liberal Yabloko Party holds a poster reading: "You need to change the brain, not the constitution!" as he stages a one-man picket at the State Duma, the Lower House of the Russian Parliament in Moscow, Russia, Wednesday, March 11, 2020. The Russian parliament has approved a sweeping constitutional reform that will allow President Vladimir Putin to stay in power for another 12 years after his current term ends in 2024. Wednesday's vote was the third and final reading. (AP Photo/Pavel Golovkin) Credit: Pavel Golovkin

Russian lawmakers on Wednesday rapidly rubber-stamped sweeping constitutional changes that could keep President Vladimir Putin in power until 2036.

If Putin won and completed two more terms as president, it would make him the ruler of Russia for 36 years – longer than any other leader in its modern history.

The measure must still be approved by the country’s Constitutional Court and by a nationwide vote next month before they come into force. Putin’s critics called for protests, condemning the move as a way to keep him in office after he hits his term limit in 2024.

The Kremlin-controlled lower house, the State Duma, endorsed a set of amendments to the Russian Constitution and a provision that resets the term count for Putin once the revisions come into force. It passed the chamber by a 383-0 vote with 43 abstentions, and several hours later sailed through the upper house, the Federation Council, by a vote of 160-1 with three abstentions.

It is unclear when the Constitutional Court will rule, but a nationwide vote on the proposed amendments is set for April 22.

The 67-year-old former KGB officer has ruled Russia for more than 20 years, the country’s longest-serving ruler since Josef Stalin, who ruled for 29 years.