Updates is a correct spelling of the word. The sound /dʒ/ is spelled as 'j' in the English language, while the sound /d/ is spelled as 'd'. The spelling of the word 'updates' follows this rule, as the first four letters of the word are pronounced as the sound /ʌd/ which is spelled as 'ud'. Therefore, the correct spelling of the word is updates, not udates, which would be pronounced as /juːdeɪts/.