Dear tiff maintainer,

The current d/watch doesn't make it possible to look for new upstream
releases, as it is visible in https://tracker.debian.org/pkg/tiff, or in
https://udd.debian.org/dmd/?packages=tiff&format=html#todo.

The changes below fix the issue:

diff --git a/debian/watch b/debian/watch
index c2ac69b..3463a40 100644
--- a/debian/watch
+++ b/debian/watch
@@ -2,4 +2,6 @@ version=4
 opts=uversionmangle=s/^(SNAPSHOT|RELEASE)\.//;s/(\d+)[_-](\d+)[_-](\d+)/\$1.\$2.\$3/;s/(\d+)[_-](\d+)/\$1.\$2/;s/(\d)[_\.\-\+]?((rc|pre|dev|beta|alpha|b|a)[\-\.]?\d*)$/$1~$2/;s/(\d)[_\.\-\+]?RC[\-\.]?(\d*)$/$1~rc$2/,\
 dversionmangle=s/\+(debian|dfsg|ds|deb)(\.?\d+)?$//i \
https://gitlab.com/libtiff/libtiff/-/tags \
-(?:|.*/)libtiff[_-]?[vV]?(\d\S*)@ARCHIVE_EXT@
+.*releases/@ANY_VERSION@
+https://qa.debian.org/cgi-bin/fakeupstream.cgi?upstream=gitlab_releases/libtiff/libtiff \
+  .*/@PACKAGE@@ANY_VERSION@@ARCHIVE_EXT@


BTW, the current latest upstream version is 4.7.0:
https://libtiff.gitlab.io/libtiff/releases/v4.7.0.html

Cheers,