Assuming you are on El Capitan as you are posting in the El Capitan community, Apple only updates it's Camera Raw database on its most recent OS which is now Mojave. El Capitan has stopped receiving updates of any kind since Mojave was introduced.
If you want to keep on top of the Camera Raw database you would need to upgrade to Mojave, but your Mac may well be too old to upgrade and if it could it may not have a compatible graphics card.
If you need to use your raw files on your El Capitan Mac you could download Adobes DNG Converter, it is free, but the latest version requires macOS Sierra or above.
https://helpx.adobe.com/uk/photoshop/using/adobe-dng-converter.html