Dmitry and Nikita Mazepin's bid to reclaim money paid to Haas ahead of the termination of their contracts appears to have been blocked by the UK Government's decision to add the duo to its sanctions list.
Russian oligarch Mazepin Sr, who controls Haas' former title sponsor Uralkali, and former driver Mazepin Jr were effectively frozen out of the sport when being dropped by the team in response to their nation's invasion of Ukraine.
After widespread condemnation of the conflict directed towards President Vladimir Putin, those closely associated with him have been hit by sanctions from countries around the world.
Having been added to the EU sanctions list last week, the Mazepin's have now been added to the UK's equivalent.
The official sanctions list from the government outline an asset freeze and travel ban for both.
This means that Haas, who had been threatened with legal action to reimburse Mazepin Sr for the funds paid to finance the team, should retain money given no assets can be transferred from the British-based outfit to the fertiliser producer.
The money was also set to fund Mazepin Jr's 'We Compete As One' foundation which would have provided support for athletes unable to compete for "political reasons".