Both the Digest and the new Institutes of Justinian were promulgated in December of 533.[8] In 534, Justinian decided that so many new laws had been passed, and so many older ones harmonized, since the publication of his first Code in 529, a second edition was needed. Hence, the Codex repetitae praelectionis was published, entirely superseding the edition of 529, the text of which has been lost.[9]