The Millers had to call of matches against Brentford, Luton and Coventry because of a Covid-19 outbreak in their squad.
The Brentford match was rescheduled for April 7, and now it has been confirmed, as expected, that Paul Warne's side will travel to Kenilworth Road on May 4 for a 7pm kick-off.
They now have two matches arranged for every remaining week of the season with the exception of the fortnight set aside for international fixtures, and a date for Coventry's visit still needed.
Rotherham are three points from safety but by the time they play again, they will have three games in hand on the block of teams above them.
Their prospects were greatly helped by Freddie Ladapo's 97th-minute winner in their last game, at Sheffield Wednesday, and the shirt he was wearing, since disinfected, will be signed and raffled in aid of Rotherham Hospice and Bluebell Wood.
Tickets, priced £3, can be bought HERE until 5pm on March 31.
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