Officers investigating a robbery at McColls, Barnes Lane are appealing for witnesses.
The incident is reported to have happened at around 4.45pm on Saturday, January 19.
A man entered the convenience store and demanded money. He left the store in the direction of Carr Lane and then towards Stubley Lane.
The man is described as being white and around 5ft 7ins tall. He was wearing a black sleeveless body warmer, dark-coloured trousers and a khaki-coloured beanie.
Police are especially keen to speak to anyone who may have dashcam footage or CCTV that covers the area where the incident occurred.
The force would like anyone with information to get in touch using one the non-emergency contact methods (Facebook, Twitter, Derbyshire Constabulary website, calling 101)
Quote the reference number 19*31259 and the name of the officer in the case, DC Dan Appleby, in any correspondence.
You can also call Crimestoppers anonymously on 0800 555 111.
Please note in the event of an emergency you should always call 999.