Russian oil supplies via the Druzhba pipeline are expected to resume to Hungary and Slovakia to be resumed after a break since late January, Reuters reports, News.bg reports.
The development could also unblock a 90 billion euro European Union loan for Ukraine, which is key to financing the country.
Slovak Economy Minister Denisa Sakova said supplies could resume soon after Ukraine reported increased pressure in the system via Belarus.
For its part, Hungarian company MOL said operator Ukrtransnafta was ready to resume transit.
President Volodymyr Zelensky said infrastructure repairs were complete and called on the EU to approve the loan, which should cover a significant part of the country's financial needs for the coming years.
At the same time, uncertainty remains over other supplies - Germany has been notified that the transit of Kazakh oil to the refinery in Schwedt, which highlights the vulnerability of energy chains in Europe.