diff -Nru libdatrie-0.2.12/debian/changelog libdatrie-0.2.12/debian/changelog
--- libdatrie-0.2.12/debian/changelog	2018-06-19 07:11:14.000000000 +0000
+++ libdatrie-0.2.12/debian/changelog	2019-02-01 08:02:22.000000000 +0000
@@ -1,3 +1,19 @@
+libdatrie (0.2.12-2) unstable; urgency=medium
+
+  [ Ondřej Nový ]
+  * d/copyright: Change Format URL to correct one
+
+  [ Theppitak Karoonboonyanan ]
+  * Drop iceweasel from libdatrie-doc Suggests
+  * Switch to dh level 12
+    - d/control: B-Dep on debhelper-compat (= 12) instead of debhelper
+    - d/compat: Removed
+  * d/copyright: Update years on packaging
+  * Bump Standards-Version to 4.3.0 (no changes)
+  * d/gbp.conf: Added, following DEP-14
+
+ -- Theppitak Karoonboonyanan <thep@debian.org>  Fri, 01 Feb 2019 15:02:22 +0700
+
 libdatrie (0.2.12-1) unstable; urgency=medium
 
   * Add Depends: pkg-config to libdatrie-dev
diff -Nru libdatrie-0.2.12/debian/compat libdatrie-0.2.12/debian/compat
--- libdatrie-0.2.12/debian/compat	2018-06-19 07:11:14.000000000 +0000
+++ libdatrie-0.2.12/debian/compat	1970-01-01 00:00:00.000000000 +0000
@@ -1 +0,0 @@
-11
diff -Nru libdatrie-0.2.12/debian/control libdatrie-0.2.12/debian/control
--- libdatrie-0.2.12/debian/control	2018-06-19 07:11:14.000000000 +0000
+++ libdatrie-0.2.12/debian/control	2019-02-01 08:02:22.000000000 +0000
@@ -3,11 +3,11 @@
 Maintainer: Theppitak Karoonboonyanan <thep@debian.org>
 Build-Depends:
  autoconf-archive,
- debhelper (>= 11),
+ debhelper-compat (= 12),
  dpkg-dev (>= 1.17.1~)
 Build-Depends-Indep: doxygen (>= 1.8.8)
 Rules-Requires-Root: no
-Standards-Version: 4.1.4
+Standards-Version: 4.3.0
 Section: libs
 Vcs-Git: https://salsa.debian.org/debian/libdatrie.git
 Vcs-Browser: https://salsa.debian.org/debian/libdatrie
@@ -78,7 +78,7 @@
 Architecture: all
 Multi-Arch: foreign
 Depends: libjs-jquery, ${misc:Depends}
-Suggests: iceweasel | www-browser
+Suggests: www-browser
 Description: Documentation files for double-array trie library
  Trie is a kind of digital search tree, an efficient indexing method in which
  search time is independent of database size. It only takes O(m) search time,
diff -Nru libdatrie-0.2.12/debian/copyright libdatrie-0.2.12/debian/copyright
--- libdatrie-0.2.12/debian/copyright	2018-06-19 07:11:14.000000000 +0000
+++ libdatrie-0.2.12/debian/copyright	2019-02-01 08:02:22.000000000 +0000
@@ -1,4 +1,4 @@
-Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: libdatrie
 Upstream-Contact: Theppitak Karoonboonyanan <theppitak@gmail.com>
 Source: https://linux.thai.net/pub/thailinux/software/libthai/
@@ -24,7 +24,7 @@
  License version 2.1 can be found in `/usr/share/common-licenses/LGPL-2.1'.
 
 Files: debian/*
-Copyright: 2006-2018 Theppitak Karoonboonyanan <thep@debian.org>
+Copyright: 2006-2019 Theppitak Karoonboonyanan <thep@debian.org>
 License: GPL-2+
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
diff -Nru libdatrie-0.2.12/debian/gbp.conf libdatrie-0.2.12/debian/gbp.conf
--- libdatrie-0.2.12/debian/gbp.conf	1970-01-01 00:00:00.000000000 +0000
+++ libdatrie-0.2.12/debian/gbp.conf	2019-02-01 08:02:22.000000000 +0000
@@ -0,0 +1,4 @@
+[DEFAULT]
+pristine-tar = True
+debian-branch = debian/master
+upstream-branch = upstream/latest