Plans to expand the museum's building again were underway as early as 2013, although the museum did not announce its plans to expand the museum building until 2016. The expansion plan saw the construction of a learning lounge annex, that increased the building's size by an additional . The learning lounge annex was created in response to the feedback received from the museum, which requested more hands-on exhibits and activities at the museum. The expansion for the museum was funded by the provincial and federal governments, costing approximately C$9.3 million. The provincial government provided C$5.7 million, while the remaining C$3.5 million was provided by the federal government. The expansion marks the first time the museum's received cultural infrastructure funding from the federal government. The learning lounge annex was formally opened to the public on 28 June 2019.