In December 2013, the U.S. Consumer Product Safety Commission (CPSC) published an update to the consumer product safety standard for infant bath seats. The standard incorporated by reference the applicable ASTM voluntary standard. ASTM has since published two revised versions of the voluntary standard for infant bath seats. We are publishing this direct final rule revising the CPSC's mandatory standard for infant bath seats to incorporate by reference, the most recent version of the applicable ASTM standard.