Accrington Stanley have signed Birmingham's Josh Andrews and Norwich's Lewis Shipley on loan, while Kelvin Mellor has joined on a one-year deal.
Andrews, 21, and Shipley, 19, both join on season-long loans from their clubs.
Andrews has previously played in League Two during loan spells with Harrogate, Rochdale and Doncaster, while Shipley is yet to play full senior football.
Mellor, 32, moves to Lancashire after being released by Crewe Alexandra at the end of the 2022-23 season.
"This is my fourth loan, I am familiar with the league and I have learnt this is a much more physical league to under-23s football, people's jobs are on the line," Andrews said.