In modern times, men bring things up to date (5)
I believe the answer is:
amend
'things up to date' is the definition.
I can't judge whether this definition defines the answer.
'in modern times men' is the wordplay.
'in' indicates putting letters inside.
'modern times' becomes 'ad' (I've seen this in other clues).
'ad' enclosing 'men' is 'AMEND'.
'bring' is the link.
Can you help me to learn more?
(Other definitions for amend that I've seen before include "Correct error, make minor alteration as to writing" , "Make minor improvements to (something)" , "Put right" , "Rectify" , "Correct or alter to improve" .)