I didn't put it on my CV since by the time I was updating my CV I'd already done much more interesting stuff than what I did at that time so it didn't add anyth

I didn't put it on my CV since by the time I was updating my CV I'd already done much more interesting stuff than what I did at that time so it didn't add anything, but if that had been the extent of my experience then I'd 100% put it on my CV. Anything that's relevant to the job the CV is for.