The federal government is committed to making sure victims of the MH17 flight shot down over Ukraine receive justice, Foreign Minister Julie Bishop said ahead of this Sunday's two-year anniversary.

All 298 passengers and crew, including 27 Australian nationals, were killed when the Malaysian Airlines flight was hit, with a report from the Dutch Safety Board saying it was brought down by a Russian-built missile fired from an area where Russian separatists were operating.

Eight Australian families, including lead applicant Perth woman Cassandra Gibson, whose mother Liliane Derden was among those killed on the plane, have filed a class action against Malaysian Airlines.

"I am very aware of the poignancy of this date and the grief it will continue to bring for families of those who were killed in this incident," Ms Bishop told reporters.

"The Australian government will continue to do all we can to hold those responsible for this atrocity to account."

The government was awaiting the findings of the joint investigation taskforce, of which Australia is one of five countries involved, Ms Bishop said.

"It has been thorough, it has been done with integrity and I look forward to reading the detail of it," Ms Bishop said.

"We can then determine what steps, what action we can take in the interests of finding justice for those who were killed and for their families."