A shelf adjustment mechanism for an appliance includes a plurality of support surfaces coupled to a shelf bracket. The shelf bracket is operable between a securing position and a recessed position. A bracket module rotationally receives the shelf bracket. The securing position of the shelf bracket is defined by a substantially horizontal orientation of the support surfaces with respect to the bracket module. An angled biasing surface is defined on the shelf bracket. The biasing surface is configured to engage a shelf as the shelf is moved vertically along the angled biasing surface. Engagement of the shelf with the angled biasing surface selectively operates the shelf bracket from the securing position to a recessed position.