Wales assistant coaches Rob Howley and Robin McBryde have signed new contracts until after the 2019 Rugby World Cup.
Shaun Edwards penned a new deal last December and attack coach Howley and forwards coach McBryde have now followed suit.
The duo have played key roles under Warren Gatland as Wales won Grand Slams in 2008 and 2012, as well as a Six Nations title in 2013.
Wales, who face New Zealand on Saturday in the third and final Test of a series which they have already lost, also reached the World Cup semi-final in 2011 and the last eight last in 2015.
Welsh Rugby Union chief executive Martyn Phillips said: "We sat down with Warren post Rugby World Cup and conducted a review of the campaign and the team and looked ahead to the next four year cycle and the 2019 tournament in Japan.
"We concluded that this is a tight, ambitious coaching team and one we believe will make us more competitive in 2019.
"We looked at the coaches as a team and this is a team that works well together, it has trust.
"We have put together a four year rugby strategy which is in its second year and having continuity and stability at the helm is part of ensuring that strategy is delivered upon.
"The appointment of Geraint John to concentrate on elite performance and Ryan Jones to look after community rugby were our first major changes at the Welsh Rugby Union.
"Those appointments are all about investing in and bringing accountability to those areas and we will also make additional investments in rugby below the pro game to enable the long-term health of the game.
"We are coming into year two of the strategy and we have plans around how we can freshen things up, but we are delighted to be able to confirm both Rob and Robin will now be with us until, at least, beyond the 2019 World Cup."
Wales also confirmed they will play A team fixtures next season for the first time since 2002.