The README suggests:

For normal work with fresh resque and resque-scheduler gems add next lines in lib/rake/resque.rake

 task "resque:pool:setup" do
   Resque::Pool.after_prefork do |job|
     Resque.redis.client.reconnect
   end
 end

However, in redis 5.x, it appears #reconnect is no longer available, that code raises:

NoMethodError: undefined method 'reconnect' for #<Redis::Client ...

Not sure what the appropriate replacement is, but seems like it's not that....