The women's sevens world series has been extended to six tournaments with Canada and England signing up to host events.
Langford in British Columbia will host round four of the series on April 18-19.
The penultimate round of the series will be in London at the Twickenham Stoop on the same weekend as the men's event in May.
The sport continues to ramp up ahead of its Olympics introduction in Brazil in two years.
There are 12 teams in each round of the series. Seven teams have qualified as core teams from last season's series, headed by champions New Zealand.
Hong Kong will host a qualifying competition in September that will see an extra four teams qualify. The 12th team will be invited for each round of the series.
IRB Women's Sevens World Series 2013/14
First round: Dubai, United Arab Emirates - December 4-5
Second round: São Paulo, Brazil - February 7-8
Third round: Atlanta, Georgia, USA - March 14-15
Fourth round: Langford, British Columbia, Canada - April 18-19
Fifth round: London, UK - May 15-16
Sixth round: Amsterdam, Netherlands - May 22-23
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