Wikipedia is an incredible free resource and the quintessential example of the power of crowdsourcing. And yet, it can’t help but suffer from the same biases as society at large. Because of the digital divide, black people (and people of color more broadly) lack the same reliable access to the Internet as white people. Meanwhile, black employees make up a tiny fraction of the tech sector’s workforce. The result is a lack of black Wikipedia editors and a lack of articles relating to important aspects of black history.

Read more: Last year, activist editors undertook a similar project to get more female scientists and inventors the Wikipedia pages they deserved.

“There is a gap that exists when it comes to people of color on Wikipedia, both as subjects of articles and as contributors,” says Maira Liriano, the associate chief librarian at the Schomburg Center, the New York Public Library’s center for research in black culture.

As part of its programming during black history month, the Schomburg Center is hosting a Wikipedia edit-a-thon where Schomburg staff will train participants on how to properly edit Wikipedia and then set them loose on the free encyclopedia to create and improve articles relating to black history.

The National Black Theater, just one of the entries that needs adding or expanding.

“Black life matters, and one way you can demonstrate that is by having a really strong presence in Wikipedia and having a voice,” Liriano says. “It’s a two-fold endeavor: having the entries there to inform people as well as giving people the skills to edit so that as time goes on people of color have those skills to contribute to Wikipedia.”

Unfortunately, that strong presence isn’t there right now. The gap in entries related to black people gets worse when you look beyond the U.S. to the rest of the globe, she says.

To its credit, Wikipedia has long been aware of this issue. A page on Wikipedia itself is devoted to the issue, noting that Wikipedia is “inhibited by systemic bias that perpetuates a bias against underrepresented cultures and topics. The systemic bias is created by the shared social and cultural characteristics of most editors, and it results in an imbalanced coverage of topics on Wikipedia.”

“The omission of black people and black history makes it seem like it’s not important,” says Liriano. “Wikipedia is the go-to place for information, especially for young people who were born in the digital age. It’s what they seek out. So even if they do a Google search and there is information about somebody or something online, they look for Wikipedia. The existence of an entry on Wikipedia gives it weight. It’s kind of like ‘Oh, it’s on Wikipedia? Then it’s important.’ ”