The former Rotherham United custodian, who has featured six times since joining in the summer of 2025, is now contracted until June 2028.
The 31-year-old has started both of this season’s Carabao Cup ties and been an unused substitute for all five of the club’s Premier League fixtures, with summer signing Jack Butland sidelined with injury.
Phillips said: "I’m absolutely delighted. I’ve loved my time here so far.
Hull City v Southampton, EFL Championship, MKM Stadium, Hull.
Tigers Dillon Phillips.
Photograph by Tony Johnson. 20th September 2025.placeholder image
Hull City v Southampton, EFL Championship, MKM Stadium, Hull. Tigers Dillon Phillips. Photograph by Tony Johnson. 20th September 2025.
"Kostas (Tzolakis) and Jack have come in this year, both at different stages of their careers, but with great profiles. There are things I can learn from them, and hopefully things they can take from me."
Guiseley have been handed a long trip to Suffolk outfit Leiston in the fourth qualifying round of the FA Cup later this month.
The Lions will travel to the Southern League Premier League Central outfit on October 17.
Winners of the 32 ties will join the League One and Two clubs in the first round in November.
Harrogate Town manager Simon Weaver. Picture: Jonathan Gawthorpeplaceholder image
Harrogate Town manager Simon Weaver. Picture: Jonathan Gawthorpe
Meanwhile, Scarborough Athletic will face another Southern League Premier Central side if they beat Macclesfield in their third-qualifying round replay on the east coast on Tuesday night.
National League North side Boro be at home to Leicestershire-based Anstey Nomads if they dispose of the Silkmen.
National League clubs Harrogate Town and FC Halifax Town enter the draw at the fourth-qualifying round stage and Simon Weaver's side face a trip across the Pennines to face Bury FC at Gigg Lane.
The Shakers have won the competition twice in their history, back in 1900 and 1903.
On their way back up the footballing pyramid, Bury now compete in the Northern League Premier Division.
Halifax have been handed a home tie against National League North high-fliers South Shields.
Matches will be played on and around the weekend of October 17.