diff -Nru bnfc-2.8.1/debian/changelog bnfc-2.8.1/debian/changelog
--- bnfc-2.8.1/debian/changelog	2016-10-27 22:32:13.000000000 +0000
+++ bnfc-2.8.1/debian/changelog	2018-04-10 00:04:39.000000000 +0000
@@ -1,3 +1,18 @@
+bnfc (2.8.1-4) unstable; urgency=medium
+
+  [ Ilias Tsitsimpis ]
+  * Change Priority to optional. Since Debian Policy version 4.0.1,
+    priority extra has been deprecated.
+  * Use the HTTPS form of the copyright-format URL
+  * Modify d/watch and Source field in d/copyright to use HTTPS
+  * Declare compliance with Debian policy 4.1.1
+  * Use salsa.debian.org URLs in Vcs-{Browser,Git} fields
+
+  [ Clint Adams ]
+  * Bump to Standards-Version 4.1.4.
+
+ -- Clint Adams <clint@debian.org>  Mon, 09 Apr 2018 20:04:39 -0400
+
 bnfc (2.8.1-3) unstable; urgency=medium
 
   * Upload to unstable as part of GHC 8 transition.
diff -Nru bnfc-2.8.1/debian/control bnfc-2.8.1/debian/control
--- bnfc-2.8.1/debian/control	2016-10-27 22:32:13.000000000 +0000
+++ bnfc-2.8.1/debian/control	2018-04-09 19:01:44.000000000 +0000
@@ -3,7 +3,7 @@
 Uploaders:
  Joachim Breitner <nomeata@debian.org>,
  Dmitry Bogatov <KAction@gnu.org>,
-Priority: extra
+Priority: optional
 Section: haskell
 Build-Depends:
  alex,
@@ -14,10 +14,10 @@
  happy,
  haskell-devscripts (>= 0.13),
  libghc-mtl-dev,
-Standards-Version: 3.9.8
+Standards-Version: 4.1.4
 Homepage: http://bnfc.digitalgrammars.com/
-Vcs-Browser: https://anonscm.debian.org/cgit/pkg-haskell/DHG_packages.git/tree/p/bnfc
-Vcs-Git: https://anonscm.debian.org/git/pkg-haskell/DHG_packages.git
+Vcs-Browser: https://salsa.debian.org/haskell-team/DHG_packages/tree/master/p/bnfc
+Vcs-Git: https://salsa.debian.org/haskell-team/DHG_packages.git
 
 Package: bnfc
 Architecture: any
diff -Nru bnfc-2.8.1/debian/copyright bnfc-2.8.1/debian/copyright
--- bnfc-2.8.1/debian/copyright	2016-10-16 18:26:11.000000000 +0000
+++ bnfc-2.8.1/debian/copyright	2018-04-07 12:01:41.000000000 +0000
@@ -1,8 +1,8 @@
-Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: BNFC
 Upstream-Contact: Markus Forsberg <markus.forsberg@gu.se>
                   Aarne Ranta <aarne@chalmers.se>
-Source: http://hackage.haskell.org/package/BNFC
+Source: https://hackage.haskell.org/package/BNFC
 
 Files: *
 Copyright: 2002-2010 Björn Bringert <bringert@cs.chalmers.se>
diff -Nru bnfc-2.8.1/debian/watch bnfc-2.8.1/debian/watch
--- bnfc-2.8.1/debian/watch	2016-10-12 16:16:48.000000000 +0000
+++ bnfc-2.8.1/debian/watch	2018-04-07 12:01:41.000000000 +0000
@@ -1,2 +1,2 @@
 version=3
-http://hackage.haskell.org/package/BNFC/distro-monitor .*-([0-9\.]+).(?:zip|tgz|tbz|txz|(?:tar\.(?:gz|bz2|xz)))
+https://hackage.haskell.org/package/BNFC/distro-monitor .*-([0-9\.]+).(?:zip|tgz|tbz|txz|(?:tar\.(?:gz|bz2|xz)))