Russia's "shadow fleet" of oil tankers has been targeted by the EU's 15th package of sanctions.
Ships like these, often uninsured, transport Russian oil in violation of international sanctions.
A total of 75 tankers will be barred from EU ports under the updated sanctions.
Sanctions also target Russians and third-country entities who assist Russia in evading export restrictions.
Ursula von der Leyen, President of the European Commission, praised the sanctions, reaffirming the EU's commitment to pressure the Kremlin.
Sanctions include restrictions on shadow fleet operations and penalties for military and technology assistance to Russia.
Russia's economic output and ability to sustain the war in Ukraine are under threat from the EU's ongoing efforts.
EU member states have been engaged in intense negotiations to approve the sanctions package.
In brokering the deal, Hungary, which holds the EU presidency, played a crucial role.
Sanctions will take effect shortly after the EU foreign ministers approve the package.
As a result, the EU's latest sanctions package marks a significant step forward in efforts to curb Russia's illicit oil sales as a source of funding for war.
It is the EU's goal to further isolate Russia economically and limit its ability to sustain military operations in Ukraine by targeting the shadow fleet and associated entities.