06/01/2016 04:37 EDT | Updated 06/01/2016 04:59 EDT

Pride Flag Flies On Parliament Hill For The First Time

Trudeau will also attend parades this month.

OTTAWA — The Pride flag is flying on Parliament Hill in an all-party show of support to mark the start of a month celebrating Canada's lesbian, gay, bisexual and transgender community.

Prime Minister Justin Trudeau raised the flag on the west lawn at a celebration attended by MPs from all federal parties and dozens of onlookers.

Trudeau called it a great day for Canada and the latest in a long series of milestones over the years to recognize LGBT rights.

Prime Minister Justin Trudeau takes part in a Pride flag raising ceremony on Parliament Hill, Wednesday, June 1, 2016 in Ottawa. (Photo: Adrian Wyld/CP)

He says Canada is united in its defence of LGBT rights and that is what is being celebrated, but there is more work to do.

Last month the federal Liberals introduced a bill to strengthen transgender rights following several attempts by private members to do so under past governments.

Trudeau will make history this month when he becomes the first sitting prime minister to attend Pride parades.