diff --git a/debian/changelog b/debian/changelog
index e3d8802..236a640 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,23 @@
+golang-github-nlopes-slack (0.1.0-2) unstable; urgency=medium
+
+  [ Debian Janitor ]
+  * Bump debhelper from deprecated 9 to 12.
+  * Set debhelper-compat version in Build-Depends.
+  * Set upstream metadata fields: Repository, Repository-Browse.
+
+  [ Nobuhiro Iwamatsu ]
+  * d/control: Update Maintainer to Debian Go Packaging Team
+    <team+pkg-go@tracker.debian.org>.
+  * d/control: Change Section from devel to golang.
+  * d/control: Bump Standards-Version to 4.6.0 (no change).
+  * d/control: Mark library package with "Multi-Arch: foreign".
+  * d/control: Add "Rules-Requires-Root: no".
+  * d/gbp.conf: Set debian-branch to debian/sid for DEP-14 conformance.
+  * d/watch: Update to version 4.
+  * d/upstream/metadata: Add upstream metadata fields.
+
+ -- Nobuhiro Iwamatsu <iwamatsu@debian.org>  Wed, 15 Sep 2021 10:16:04 +0900
+
 golang-github-nlopes-slack (0.1.0-1) unstable; urgency=medium
 
   * Initial release (Closes: #892804)
diff --git a/debian/control b/debian/control
index d2c41f4..995f98d 100644
--- a/debian/control
+++ b/debian/control
@@ -1,22 +1,24 @@
 Source: golang-github-nlopes-slack
-Section: devel
+Section: golang
 Priority: optional
-Maintainer: Debian Go Packaging Team <pkg-go-maintainers@lists.alioth.debian.org>
+Maintainer: Debian Go Packaging Team <team+pkg-go@tracker.debian.org>
 Uploaders: Nobuhiro Iwamatsu <iwamatsu@debian.org>
 Build-Depends: debhelper-compat (= 12),
                dh-golang,
                golang-any,
                golang-github-stretchr-testify-dev,
                golang-golang-x-net-dev
-Standards-Version: 4.1.1
+Standards-Version: 4.6.0
 Homepage: https://github.com/nlopes/slack
 Vcs-Browser: https://salsa.debian.org/go-team/packages/golang-github-nlopes-slack
 Vcs-Git: https://salsa.debian.org/go-team/packages/golang-github-nlopes-slack.git
 XS-Go-Import-Path: github.com/nlopes/slack
 Testsuite: autopkgtest-pkg-go
+Rules-Requires-Root: no
 
 Package: golang-github-nlopes-slack-dev
 Architecture: all
+Multi-Arch: foreign
 Depends: ${shlibs:Depends},
          ${misc:Depends},
          golang-github-stretchr-testify-dev,
diff --git a/debian/gbp.conf b/debian/gbp.conf
index cec628c..03fc40b 100644
--- a/debian/gbp.conf
+++ b/debian/gbp.conf
@@ -1,2 +1,4 @@
 [DEFAULT]
+debian-branch = debian/sid
+dist = DEP14
 pristine-tar = True
diff --git a/debian/gitlab-ci.yml b/debian/gitlab-ci.yml
deleted file mode 100644
index 594e14e..0000000
--- a/debian/gitlab-ci.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-# auto-generated, DO NOT MODIFY.
-# The authoritative copy of this file lives at:
-# https://salsa.debian.org/go-team/infra/pkg-go-tools/blob/master/config/gitlabciyml.go
----
-include:
-  - https://salsa.debian.org/go-team/infra/pkg-go-tools/-/raw/master/pipeline/test-archive.yml
diff --git a/debian/upstream/metadata b/debian/upstream/metadata
index 03319d0..1fca8a3 100644
--- a/debian/upstream/metadata
+++ b/debian/upstream/metadata
@@ -1,2 +1,4 @@
 Repository: https://github.com/nlopes/slack.git
 Repository-Browse: https://github.com/nlopes/slack
+Bug-Database: https://github.com/nlopes/slack/issues
+Bug-Submit: https://github.com/nlopes/slack/issues/new
diff --git a/debian/watch b/debian/watch
index a8543c4..aa79b8a 100644
--- a/debian/watch
+++ b/debian/watch
@@ -1,4 +1,3 @@
-version=3
-opts=filenamemangle=s/.+\/v?(\d\S*)\.tar\.gz/golang-github-nlopes-slack-\$1\.tar\.gz/,\
-uversionmangle=s/(\d)[_\.\-\+]?(RC|rc|pre|dev|beta|alpha)[.]?(\d*)$/\$1~\$2\$3/ \
-  https://github.com/nlopes/slack/tags .*/v?(\d\S*)\.tar\.gz
+version=4
+
+opts=filenamemangle=s/.*\/v(\d\S+)\.tar\.gz/golang-github-nlopes-slack-$1\.tar\.gz/ https://github.com/nlopes/slack/tags .*\/v(\d\S+)\.tar\.gz