Andy Halliday has penned a two-year contract extension at Hearts.
The midfielder moved to the Tynecastle club at the start of last season.
And after helping the Jambos win promotion back to the top flight, Halliday has featured 26 times this season.
The 30-year-old has now been rewarded by the Gorgie club with a new contract to keep him at the club until 2024.
Boss Neilson told the club website: "It’s great news that Andy has committed his future to the club.
“He’s a really experienced player and someone you need in your dressing room. He gives his all on the pitch and I know the fans appreciate the fact that you get nothing less than 100% from him.
“It’s a bonus for us that he is so versatile, as anyone watching our win over St Mirren at the weekend would’ve seen when he came on to slot in at right full-back.
“I’m happy he’s going to be here for another two years and he will continue to be an important part of this squad as we aim to keep on progressing.”
Sporting Director Joe Savage added: “A big part of any success at a football club is stability and we’ve been working hard to ensure that, where merited, we keep that continuity going.
“We obviously got some of our key senior players signed up earlier in the year and Andy penning a new deal was the next piece of the jigsaw.
“Andy is a winner and you can see that when he goes out onto the pitch. He’s a great role model for younger players and I’m happy that we will continue to reap the benefits of his professionalism for another two years.”
