Speaker Andriy Parubiy has issued an instruction to call an emergency plenary meeting of parliament at noon on 22 May, according to Interfax-Ukraine.
Earlier, President Volodymyr Zelenskyy asked parliament to hold an emergency session on 22 May to amend the laws "On the election of Ukraine's people's deputies" and "On public procurement".
An emergency session tomorrow has to do with Zelenskyy's decree on parliament dissolution.
A snap election campaign begins the next day after the president's decree scheduling an election is published.