Warriors have bolstered their options in the front row by capturing the signing of tighthead prop James Johnston who will join up with the Club immediately.
The big forward is an experienced Aviva Premiership campaigner having amassed 104 appearances while plying his trade for Saracens and Harlequins before a short stint at Wasps.
Johnston, who made the move to England in 2009 from New Zealand outfit Ponsonby, enjoyed a four-year spell with Quins, making 102 appearances.
He then spent two seasons at Saracens playing 51 times where they reached the Aviva Premiership final in 2013/14 before going on to win the competition in 2014/15.
The Auckland-born tighthead also has 14 international appearances to his name with Samoa, bagging a try against Japan on his debut back in 2008 and has also featured for the illustrious Barbarians.
Warriors Director of Rugby Dean Ryan said: "The scrum is an area where we've lacked a bit of experience so we're delighted James has agreed to be a part of our journey.
"He has a wealth of top-class Premiership and European game-time under his belt and will add great depth to our front row."
Johnston, 29, said: "Worcester are building something special here and I've been really impressed with how the Club has moved forward in the past 18 months.
"I can't wait to join up with my new teammates and I hope I can add something to the pack and help drive us up the league table."