diff -Nru haskell-pipes-4.3.9/debian/changelog haskell-pipes-4.3.9/debian/changelog
--- haskell-pipes-4.3.9/debian/changelog	2018-04-09 20:49:16.000000000 +0000
+++ haskell-pipes-4.3.9/debian/changelog	2018-10-01 10:33:32.000000000 +0000
@@ -1,3 +1,19 @@
+haskell-pipes (4.3.9-3) unstable; urgency=medium
+
+  * Remove build dependency on libghc-mtl-dev (provided by ghc-8.4.3)
+
+ -- Ilias Tsitsimpis <iliastsi@debian.org>  Mon, 01 Oct 2018 13:33:32 +0300
+
+haskell-pipes (4.3.9-2) unstable; urgency=medium
+
+  [ Clint Adams ]
+  * Set Rules-Requires-Root to no.
+
+  [ Ilias Tsitsimpis ]
+  * Bump debhelper compat level to 10
+
+ -- Ilias Tsitsimpis <iliastsi@debian.org>  Sun, 30 Sep 2018 21:17:34 +0300
+
 haskell-pipes (4.3.9-1) unstable; urgency=medium
 
   [ Ilias Tsitsimpis ]
diff -Nru haskell-pipes-4.3.9/debian/compat haskell-pipes-4.3.9/debian/compat
--- haskell-pipes-4.3.9/debian/compat	2018-04-09 20:49:16.000000000 +0000
+++ haskell-pipes-4.3.9/debian/compat	2018-09-29 11:08:05.000000000 +0000
@@ -1 +1 @@
-9
+10
diff -Nru haskell-pipes-4.3.9/debian/control haskell-pipes-4.3.9/debian/control
--- haskell-pipes-4.3.9/debian/control	2018-04-09 20:49:16.000000000 +0000
+++ haskell-pipes-4.3.9/debian/control	2018-10-01 10:33:32.000000000 +0000
@@ -4,10 +4,11 @@
  Clint Adams <clint@debian.org>,
 Priority: optional
 Section: haskell
+Rules-Requires-Root: no
 Build-Depends:
  cdbs,
- debhelper (>= 9),
- ghc (>= 8),
+ debhelper (>= 10),
+ ghc (>= 8.4.3),
  ghc-prof,
  haskell-devscripts (>= 0.13),
  libghc-exceptions-dev (>= 0.4),
@@ -16,9 +17,6 @@
  libghc-mmorph-dev (>= 1.0.0),
  libghc-mmorph-dev (<< 1.2),
  libghc-mmorph-prof,
- libghc-mtl-dev (>= 2.2.1),
- libghc-mtl-dev (<< 2.3),
- libghc-mtl-prof,
  libghc-semigroups-dev (>= 0.17),
  libghc-semigroups-dev (<< 0.19),
  libghc-semigroups-prof,
@@ -28,13 +26,12 @@
 Build-Depends-Indep: ghc-doc,
  libghc-exceptions-doc,
  libghc-mmorph-doc,
- libghc-mtl-doc,
  libghc-semigroups-doc,
  libghc-void-doc,
 Standards-Version: 4.1.4
 Homepage: http://hackage.haskell.org/package/pipes
 Vcs-Browser: https://salsa.debian.org/haskell-team/DHG_packages/tree/master/p/haskell-pipes
-Vcs-Git: https://salsa.debian.org/haskell-team/DHG_packages.git
+Vcs-Git: https://salsa.debian.org/haskell-team/DHG_packages.git [p/haskell-pipes]
 X-Description: compositional pipelines
  pipes is a clean and powerful stream processing library that lets you
  build and connect reusable streaming components