Prop Kane Hames looks set to add to his lone Test cap after being included in a five-man group to bolster the All Blacks squad in Dunedin.
New Zealand Rugby announced Hames would join the squad ahead of Saturday's second Bledisloe Cup Test, along with Nehe Milner-Skudder, David Havili, AkiraIoane and Atu Moli.
Hames is likely to take the bench berth of veteran loosehead Wyatt Crockett, who suffered a head knock late in New Zealand's 54-34 win in Sydney on Saturday.
Chiefs prop Hames, 28, played his lone Test against Australia when he came off the bench in the 42-8 win in Sydney last year.
Outside backs Milner-Skudder and Havili were both part of the original squad but didn't travel to Sydney while young prop Moli is an apprentice player throughout the Rugby Championship.
No explanation is given for the call-up of uncapped No.8 Ioane.
Flanker Jerome Kaino could be in doubt for the Dunedin Test after flying home from Sydney for personal reasons, triggered by a newspaper report of an extra- marital affair. Coach Steve Hansen may not consider many other changes following his team's rampant opening 50 minutes on Saturday when they raced 54-6 ahead.
However, he said he would be seeking improvements after the Wallabies closed out the scoring with four converted tries, winning the second half 28-14.
"We got enough in that last 30 to be able to get our teeth into to make sure we are not complacent at all going into the Dunedin test," Hansen told journalists.
"Because they scored four tries to two in the second half. There is enough for us to work on which is reasonably handy for a coach - quite good."