California Governor Jerry Brown signed the Orca Protection and Safety Act into law on Tuesday, banning the breeding of killer whales in captivity, as well as the circus-like shows that have them performing for crowds.

Facing increasing criticism since the 2013 documentary Blackfish exposed concerns about orca welfare, SeaWorld had already agreed to discontinue breeding their orcas in all of their U.S. parks. The new law mirrors several changes that SeaWorld had already committed to making, but the bill’s sponsors say the legislation was still important to make sure that SeaWorld can’t change its mind, and that no other California park can breed or do non-educational orca shows in the future. (Read SeaWorld to End Controversial Orca Shows and Breeding.)

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