Elding's three-month deal was due to expire after Saturday's game at Accrington.
However, the Imps have agreed to extend the loan for a further three days so Elding can play in the away game with Chesterfield on April 7.
The 26-year-old has made 13 appearances for Peter Jackson's men, scoring three goals, and has recently served a three-match ban.
Source: Team_Talk