Signature by key "..." uses weak digest algorithm (SHA1)

Hello,
can somebody help me. I can´t install homegear. I received always an error like:

Hit:1 https://homegear.eu/packages/Ubuntu trusty/ InRelease Reading package lists... Done W: http://homegear.eu/packages/Ubuntu/trusty/InRelease: Signature by key *********************** uses weak digest algorithm (SHA1)

How can i fix this any idea?

Hey, that is just a Warning. I fixed the file InRelease though, so now the hash algorithm is SHA512. If you can’t install Homegear, there must be another error message.

Cheers,

Sathya