diff -Nru golang-github-chmduquesne-rollinghash-4.0.0/debian/changelog golang-github-chmduquesne-rollinghash-4.0.0/debian/changelog
--- golang-github-chmduquesne-rollinghash-4.0.0/debian/changelog	2018-11-18 01:22:41.000000000 +0000
+++ golang-github-chmduquesne-rollinghash-4.0.0/debian/changelog	2021-11-03 13:33:08.000000000 +0000
@@ -1,3 +1,17 @@
+golang-github-chmduquesne-rollinghash (4.0.0-2) unstable; urgency=medium
+
+  * d/control:
+    - Add myself as Uploader (Closes: #940353)
+    - Change section  to golang.
+    - Fix maintainer address.
+    - Mark -dev M-A: foreign.
+    - Add Rules-Requires-Root: no.
+    - Fix Depends.
+  * d/watch:
+    - Use version 4 format.
+
+ -- Aloïs Micard <creekorful@debian.org>  Wed, 03 Nov 2021 14:33:08 +0100
+
 golang-github-chmduquesne-rollinghash (4.0.0-1) unstable; urgency=medium
 
   * New upstream version.
diff -Nru golang-github-chmduquesne-rollinghash-4.0.0/debian/compat golang-github-chmduquesne-rollinghash-4.0.0/debian/compat
--- golang-github-chmduquesne-rollinghash-4.0.0/debian/compat	2018-11-18 01:22:41.000000000 +0000
+++ golang-github-chmduquesne-rollinghash-4.0.0/debian/compat	1970-01-01 00:00:00.000000000 +0000
@@ -1 +0,0 @@
-10
diff -Nru golang-github-chmduquesne-rollinghash-4.0.0/debian/control golang-github-chmduquesne-rollinghash-4.0.0/debian/control
--- golang-github-chmduquesne-rollinghash-4.0.0/debian/control	2018-11-18 01:22:41.000000000 +0000
+++ golang-github-chmduquesne-rollinghash-4.0.0/debian/control	2021-11-03 13:24:38.000000000 +0000
@@ -1,22 +1,21 @@
 Source: golang-github-chmduquesne-rollinghash
-Section: devel
+Section: golang
 Priority: optional
-Maintainer: Debian Go Packaging Team <pkg-go-maintainers@lists.alioth.debian.org>
-Uploaders: Alexandre Viau <aviau@debian.org>
-Build-Depends: debhelper (>= 10),
-               dh-golang,
-               golang-any
-Standards-Version: 3.9.8
+Maintainer: Debian Go Packaging Team <team+pkg-go@tracker.debian.org>
+Uploaders: Aloïs Micard <creekorful@debian.org>
+Build-Depends: debhelper-compat (= 13), dh-golang, golang-any
+Standards-Version: 4.6.0
 Homepage: https://github.com/chmduquesne/rollinghash
 Vcs-Browser: https://salsa.debian.org/go-team/packages/golang-github-chmduquesne-rollinghash
 Vcs-Git: https://salsa.debian.org/go-team/packages/golang-github-chmduquesne-rollinghash.git
 XS-Go-Import-Path: github.com/chmduquesne/rollinghash
 Testsuite: autopkgtest-pkg-go
+Rules-Requires-Root: no
 
 Package: golang-github-chmduquesne-rollinghash-dev
 Architecture: all
-Depends: ${shlibs:Depends},
-         ${misc:Depends}
+Multi-Arch: foreign
+Depends: ${misc:Depends}
 Description: Implementation of some rolling checksums in golang
  Package rollinghash implements rolling versions of some hashes.
  Currently included:
diff -Nru golang-github-chmduquesne-rollinghash-4.0.0/debian/upstream/metadata golang-github-chmduquesne-rollinghash-4.0.0/debian/upstream/metadata
--- golang-github-chmduquesne-rollinghash-4.0.0/debian/upstream/metadata	1970-01-01 00:00:00.000000000 +0000
+++ golang-github-chmduquesne-rollinghash-4.0.0/debian/upstream/metadata	2021-11-03 10:59:27.000000000 +0000
@@ -0,0 +1,4 @@
+Bug-Database: https://github.com/chmduquesne/rollinghash/issues
+Bug-Submit: https://github.com/chmduquesne/rollinghash/issues/new
+Repository: https://github.com/chmduquesne/rollinghash.git
+Repository-Browse: https://github.com/chmduquesne/rollinghash
diff -Nru golang-github-chmduquesne-rollinghash-4.0.0/debian/watch golang-github-chmduquesne-rollinghash-4.0.0/debian/watch
--- golang-github-chmduquesne-rollinghash-4.0.0/debian/watch	2018-11-18 01:22:41.000000000 +0000
+++ golang-github-chmduquesne-rollinghash-4.0.0/debian/watch	2021-11-03 13:25:41.000000000 +0000
@@ -1,4 +1,4 @@
-version=3
-opts=filenamemangle=s/.+\/v?(\d\S*)\.tar\.gz/golang-github-chmduquesne-rollinghash-\$1\.tar\.gz/,\\
-uversionmangle=s/(\d)[_\.\-\+]?(RC|rc|pre|dev|beta|alpha)[.]?(\d*)$/\$1~\$2\$3/ \\
-  https://github.com/chmduquesne/rollinghash/tags .*/v?(\d\S*)\.tar\.gz
+version=4
+opts="filenamemangle=s%(?:.*?)?v?(\d\S*)\.tar\.gz%@PACKAGE@-$1.tar.gz%,\
+      uversionmangle=s/(\d)[_\.\-\+]?(RC|rc|pre|dev|beta|alpha)[.]?(\d*)$/$1~$2$3/" \
+  https://github.com/chmduquesne/rollinghash/tags .*/v?(\d\S*)\.tar\.gz debian