Might it just be that "uscan" doesn't run every day on the Debian servers? :)
I tried to reproduce it on my local machine. But there the new version is recognized without problems. $ uscan --verbose uscan info: uscan (version 2.21.3+deb11u1) See uscan(1) for help uscan info: Scan watch files in . uscan info: Check debian/watch and debian/changelog in . uscan info: package="backintime" version="1.3.3-4" (as seen in debian/changelog) uscan info: package="backintime" version="1.3.3" (no epoch/revision) uscan info: ./debian/changelog sets package="backintime" version="1.3.3" uscan info: Process watch file at: debian/watch package = backintime version = 1.3.3 pkg_dir = . uscan info: Last orig.tar.* tarball version (from debian/changelog): 1.3.3 uscan info: Last orig.tar.* tarball version (dversionmangled): 1.3.3 uscan info: Requesting URL: https://github.com/bit-team/backintime/tags uscan info: Matching pattern: (?:(?:https://github.com)?\/bit\-team\/backintime\/)?.*/v?(\d.*)(?i)(?:\.(?:tar\.xz|tar\.bz2|tar\.gz|zip|tgz|tbz|txz)) uscan info: Found the following matching hrefs on the web page (newest first): https://github.com/bit-team/backintime/archive/refs/tags/v1.4.0.tar.gz (1.4.0) index=1.4.0-1 https://github.com/bit-team/backintime/archive/refs/tags/v1.4.0.tar.gz (1.4.0) index=1.4.0-1 https://github.com/bit-team/backintime/archive/refs/tags/v1.4.0.zip (1.4.0) index=1.4.0-0 https://github.com/bit-team/backintime/archive/refs/tags/v1.4.0.zip (1.4.0) index=1.4.0-0 https://github.com/bit-team/backintime/archive/refs/tags/v1.3.3.tar.gz (1.3.3) index=1.3.3-1 https://github.com/bit-team/backintime/archive/refs/tags/v1.3.3.tar.gz (1.3.3) index=1.3.3-1 https://github.com/bit-team/backintime/archive/refs/tags/v1.3.3.zip (1.3.3) index=1.3.3-0 https://github.com/bit-team/backintime/archive/refs/tags/v1.3.3.zip (1.3.3) index=1.3.3-0 https://github.com/bit-team/backintime/archive/refs/tags/v1.3.2.tar.gz (1.3.2) index=1.3.2-1 https://github.com/bit-team/backintime/archive/refs/tags/v1.3.2.tar.gz (1.3.2) index=1.3.2-1 https://github.com/bit-team/backintime/archive/refs/tags/v1.3.2.zip (1.3.2) index=1.3.2-0 https://github.com/bit-team/backintime/archive/refs/tags/v1.3.2.zip (1.3.2) index=1.3.2-0 [SNIPPED] uscan info: Looking at $base = https://github.com/bit-team/backintime/tags with $filepattern = .*/v?(\d.*)(?i)(?:\.(?:tar\.xz|tar\.bz2|tar\.gz|zip|tgz|tbz|txz)) found $newfile = https://github.com/bit-team/backintime/archive/refs/tags/v1.4.0.tar.gz $newversion = 1.4.0 $lastversion = 1.3.3 uscan info: Matching target for downloadurlmangle: https://github.com/bit-team/backintime/archive/refs/tags/v1.4.0.tar.gz uscan info: Upstream URL(+tag) to download is identified as https://github.com/bit-team/backintime/archive/refs/tags/v1.4.0.tar.gz uscan info: Filename (filenamemangled) for downloaded file: v1.4.0.tar.gz uscan: Newest version of backintime on remote site is 1.4.0, local version is 1.3.3 uscan: => Newer package available from: => https://github.com/bit-team/backintime/archive/refs/tags/v1.4.0.tar.gz uscan info: Downloading upstream package: v1.4.0.tar.gz uscan info: Requesting URL: https://github.com/bit-team/backintime/archive/refs/tags/v1.4.0.tar.gz uscan info: Successfully downloaded package: v1.4.0.tar.gz