Cannot update FTL

I attempted to update my pihole this morning, core and web interfaces both updated, but FTL fails.

  [✗] Update local cache of available packages
  Error: Unable to update package cache. Please try "sudo apt-get update"
  Unable to complete update, please contact Pi-hole Support

After trying the apt-get update command, I receive the following error:

E: Repository ' buster InRelease' changed its 'Suite' value from 'stable' to 'oldstable'
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.

Any help is appreciated. Thanks!

I got it. Had to run the following first:

sudo apt-get update --allow-releaseinfo-change

Then pihole -up was able to successfully update.

You can close this.

Please consider searching the forums before opening a new issue.

This has been asked and answered many times, e.g. see Can't update to FTL 5.9 Final: "Error: Unable to update package cache."

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