The tag is present in Lintian version 2.113.26. That is the most recent version we know about.
We use semantic versions.
The patch number is a commit step indicator relative to the
release tag in our Git
You can find the detection logic for this version at commit 43a81d7. For merge requests, please use the latest version in the Lintian check fields/standards-version.
The source package refers to a Standards-Version that was released
after the date of the most recent
Perhaps you forgot to update the timestamp in
before building the package?