diff -Nru libvar-pairs-perl-0.004001/debian/changelog libvar-pairs-perl-0.004001/debian/changelog
--- libvar-pairs-perl-0.004001/debian/changelog	2018-05-09 17:18:58.000000000 +0000
+++ libvar-pairs-perl-0.004001/debian/changelog	2022-12-12 23:39:08.000000000 +0000
@@ -1,3 +1,16 @@
+libvar-pairs-perl (0.004001-2) unstable; urgency=medium
+
+  [ gregor herrmann ]
+  * debian/watch: use uscan version 4.
+
+  [ Debian Janitor ]
+  * Bump debhelper from old 10 to 12.
+  * Set debhelper-compat version in Build-Depends.
+  * Update standards version to 4.1.5, no changes needed.
+  * Remove constraints unnecessary since buster
+
+ -- Jelmer Vernooij <jelmer@debian.org>  Mon, 12 Dec 2022 23:39:08 +0000
+
 libvar-pairs-perl (0.004001-1) unstable; urgency=medium
 
   * New upstream version 0.004001
diff -Nru libvar-pairs-perl-0.004001/debian/compat libvar-pairs-perl-0.004001/debian/compat
--- libvar-pairs-perl-0.004001/debian/compat	2018-05-09 17:18:58.000000000 +0000
+++ libvar-pairs-perl-0.004001/debian/compat	1970-01-01 00:00:00.000000000 +0000
@@ -1 +0,0 @@
-10
diff -Nru libvar-pairs-perl-0.004001/debian/control libvar-pairs-perl-0.004001/debian/control
--- libvar-pairs-perl-0.004001/debian/control	2018-05-09 17:18:58.000000000 +0000
+++ libvar-pairs-perl-0.004001/debian/control	2022-12-12 23:39:08.000000000 +0000
@@ -3,14 +3,14 @@
 Priority: optional
 Maintainer: Debian Perl Group <pkg-perl-maintainers@lists.alioth.debian.org>
 Uploaders: Salvatore Bonaccorso <carnil@debian.org>
-Build-Depends: debhelper (>= 10)
+Build-Depends: debhelper-compat (= 12)
 Build-Depends-Indep: libautobox-perl,
  libdevel-callsite-perl,
  libpadwalker-perl,
  libscope-upper-perl,
- perl (>= 5.22) | libdata-alias-perl,
+ perl | libdata-alias-perl,
  perl
-Standards-Version: 4.1.4
+Standards-Version: 4.1.5
 Vcs-Browser: https://salsa.debian.org/perl-team/modules/packages/libvar-pairs-perl
 Vcs-Git: https://salsa.debian.org/perl-team/modules/packages/libvar-pairs-perl.git
 Homepage: https://metacpan.org/release/Var-Pairs
@@ -23,7 +23,7 @@
  libdevel-callsite-perl,
  libpadwalker-perl,
  libscope-upper-perl,
- perl (>= 5.22) | libdata-alias-perl
+ perl | libdata-alias-perl
 Recommends: libautobox-perl
 Description: Perl module implementing iterators and pair constructors for variables
  Var::Pairs exports a small number of subroutines that add some Perl 6
diff -Nru libvar-pairs-perl-0.004001/debian/watch libvar-pairs-perl-0.004001/debian/watch
--- libvar-pairs-perl-0.004001/debian/watch	2018-05-09 17:18:58.000000000 +0000
+++ libvar-pairs-perl-0.004001/debian/watch	2022-12-12 23:39:08.000000000 +0000
@@ -1,2 +1,2 @@
-version=3
-https://metacpan.org/release/Var-Pairs   .*/Var-Pairs-v?(\d[\d.-]*)\.(?:tar(?:\.gz|\.bz2)?|tgz|zip)$
+version=4
+https://metacpan.org/release/Var-Pairs   .*/Var-Pairs-v?@ANY_VERSION@@ARCHIVE_EXT@$