Should I update the API for a chatbot utilizing completions?

Hi there.
We’ve been using the completions API for a simple chatbot. the engineer that first built the app is no longer with us, but we realized that we’re currently using version v0.27.9 .
Should I update to 1.39? is there potential of this breaking my app? ( code is quite complex)
As far as completions endpoint goes, is there any point to updating?