It includes changing Article 140 of the constitution to allow the Egyptian president to extend his current four-year term, which ends in 2022
Egypt's parliament, packed with loyalists of President Abdel Fattah al-Sisi, is to vote Tuesday on changes to the constitution that could keep the former military chief in power until 2030.
The proposed amendments were initially introduced in February by a parliamentary bloc supportive of Sisi and updated this week after several rounds of parliamentary debates.
It includes changing Article 140 of the constitution to allow the Egyptian president to extend his current four-year term, which ends in 2022, by two years.
A further change would permit Sisi to stand for another six-year term and potentially remain president until 2030.
Sisi led the army's overthrow of elected president Mohamed Morsi in 2013 following mass protests against the Islamist leader's rule.
He won his first term as president in 2014 and was re-elected in March 2018 with more than 97% of the vote, after standing virtually unopposed.
His government has been widely criticised by human rights groups for the repression of political opponents.
But Mohamed Abu-Hamed, one of the members of parliament who pushed for constitutional amendments to keep Sisi in power, is adamant that the changes are a must.
"The constitution in 2014 was written under tough exceptional circumstances," he told AFP.
He hailed Sisi as a president who "took important political, economic and security measures and must continue with his reforms," in the face of the unrest gripping neighbouring countries following the toppling of veteran president Omar al-Bashir in Sudan and the escalation of the conflict in Libya.
Keeping Sisi in power, he added, reflects "the will of the people."
Since Sisi overthrew Morsi, Egypt has drawn heavy international criticism for its sweeping crackdown on dissent.
The authorities have jailed thousands of Morsi's supporters as well as liberal and secular activists, including a popular blogger, actors, singers and journalists.
Last week, Human Rights Watch warned that the amendments, which would also increase the military's political role and grant Sisi control over the judiciary, would "institutionalise authoritarianism."
As Sisi visited Washington for talks with President Donald Trump, it urged Congress, to withhold endorsement of the Egyptian president's bid to extend his rule.
"Congress needs to use its levers to pressure the Egyptian president to reverse course, starting with withdrawing these constitutional amendments set to consolidate authoritarian rule," said HRW's Michael Page.
As well as a crackdown on dissent, Sisi has overseen a military campaign against Islamic State group-linked militants based in the Sinai Peninsula
On Tuesday, the 596-seat parliament will also vote on a controversial article which critics fear might allow the military a greater influence in Egyptian political life.
The vote is expected to be swift after the bill passed by an overwhelming majority earlier this year.
If the bill is passed by a majority of two thirds, parliament will then hold a referendum in which Egyptians will vote on the raft of amendments.
Other proposed amendments include a quota for women's representation of no less than 25% in parliament and forming a second parliamentary chamber.
Human rights groups and opposition parties say the government has intensified its crackdown on dissent with a wave of arrests ahead of the vote.