Readers' advisory is a central job of librarians who work with youth, and it is especially critical for youth who are struggling or reluctant readers. Readers' advisory is often conducted based on gender, partially due to the fact that boys are more often seen as reluctant readers, and score lower on reading measures. As there is growing awareness that not all youth fit into the classic definition of a gender binary, librarians must reconcile the needs of reluctant readers and the needs of gender non-conforming youth. This study examined what youth librarians in school and public libraries understand about using gender in readers' advisory. The study consisted of four semi-structured interviews with youth librarians, exploring the issues of readers' advisory, gender, and gender non-conformity.