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Wayne Richard Porter is aged 28 and from Boroughbridge.
He is wanted as he has failed to comply with the terms of his release licence by failing to attend probation meetings.
He was sentenced to two years in prison in 2013, for possessing Class A drugs with intent to supply and was released on Monday 3 February 2014.
Porter is described as being white, 5ft 10in tall with a medium build and dark brown hair.
Inspector Andy Chapman, of Harrogate Safer Neighbourhood Team, said: Wayne, if you see or hear this appeal, I strongly urge you to hand yourself in to the police. We have a proven track record of returning wanted people to custody. The longer you delay the inevitable you are only making matters worse for yourself.
I am also asking members of the public who see Porter to get contact the police straight away.
Officers have already visited a number of addresses where Porter is believed to have links. These visits will continue until he is back in custody.
Anyone who can help to locate Wayne Porter should contact North Yorkshire Police on 101, select option 1 and pass the details to the Force Control Room.
Or call Crimestoppers anonymously on 0800 555111.