Oleksandr Shlapak said the proposal was made following recent sharp fluctuations in oil prices on world markets, which have plunged from around $150 per barrel in the summer to the current level of below $50 per barrel.
The price of natural gas supplied by Russia's energy giant Gazprom is based on the cost of crude oil and petroleum products.
"That is why we consider it necessary for a contract on natural gas supplies to contain the option to adjust natural gas prices throughout the year in line with global fluctuations," Shlapak said.
Ukraine and Russia have failed so far to agree on a price for natural gas supplies in 2009. Ukraine currently pays $179.5 per 1,000 cubic meters and hopes the price will not rise above $250 per 1,000 cu m next year.
Meanwhile, Gazprom CEO Alexei Miller earlier said gas prices for Ukraine could reach $400 per 1,000 cu m next year.
Gazprom has also said it will not discuss natural gas prices for Ukraine until the ex-Soviet republic pays its outstanding $2.4 billion gas debt to the energy giant.
