Secure Boot Keys

Since the last BIOS update I get this message in the event viewer:

Secure Boot CA/keys need to be updated. This device signature information is included here.
DeviceAttributes: FirmwareManufacturer:Dell Inc.;FirmwareVersion:2.31.0;OEMManufacturerName:Dell Inc.;OEMModelSKU:0A9F;OSArchitecture:amd64;
BucketId: 2afe466732048f4873d14578f4125573461e79874a01b43c15c58fbd9366d3cc
BucketConfidenceLevel: 
UpdateType: 0
HResult: The operation completed successfully.

My system seems to work OK. But is something wrong?