Update requires authorization

Hey

When trying to update Xamarin i get the following error

"Error Update requires authorization"

Here is the system log

18/01/14 20.49.20,623 Xamarin Update[59221]: Reading index file 18/01/14 20.49.20,624 Xamarin Update[59221]: Loaded 1 updates from index file 18/01/14 20.49.20,624 Xamarin Update[59221]: Requesting root authorization 18/01/14 20.49.20,688 Xamarin Update[59221]: Did not acquire root authorization, error Error Domain=NSOSStatusErrorDomain Code=5531 "The operation couldn’t be completed. (OSStatus error 5531.)" 18/01/14 20.49.20,688 Xamarin Update[59221]: Error Domain=xamarin.updater Code=-1 "Updates require authorization." UserInfo=0x60800027a940 {NSLocalizedDescription=Updates require authorization.}