It is the second time that Iron manager Alan Knill has moved to extend the centre-back's spell at Glanford Park.
The Republic of Ireland U21 international, 19, has made 10 appearances since moving to North Lincolnshire.
Speaking to BBC Radio Humberside after Tuesday's 2-2 draw with Huddersfield, he indicated a willingness to remain at the club until the end of the season.