Take a minute to look for the information about camera compatibility and you will find what you need.
Adobe, and pretty much all other raw converter software authors, release updates to their raw converters as new cameras (and their new raw files) hit the market. This is a necessary process because there is no standard or universal raw file format - each manufacturer can, and does, establish their own proprietary raw file format and can vary it by camera model, even new versions of the same camera (for example, 7D > 7DII).
Adobe established the DNG format as a documented "standard" of sorts and produces a FREE DNG Converter application which will use Adobe's raw file conversion engine to take all supported raw files and convert them to the "standard" DNG format - most of the time, this results in a DNG file that is backward compatible with older raw converters that support DNG files.
This is the backdoor way to use old software with new raw file formats that are not directly supported in the old software.
The cons? It adds a step to the process of raw file conversion, takes up more disk space, etc.
Some may also add that you should upgrade to the newer versions of LR that directly support your camera's raw files - the newer LR versions have a more comprehensive and robust set of tools to edit raw files directly within the converter environment, reducing the need to process your files outside of the raw converter (in a pixel editor like Photoshop), as well as better conversion algorithms, color profiles, noise reduction and sharpening, etc., compared to older versions of LR. The newer versions of LR, however, may require computational resources that are beyond what an older machine can handle (processor, RAM, graphics card), so consider that changing to a newer version of LR may open a can of worms.