diff -Nru gerris-20131206+dfsg/debian/changelog gerris-20131206+dfsg/debian/changelog
--- gerris-20131206+dfsg/debian/changelog	2017-08-04 17:18:33.000000000 +0000
+++ gerris-20131206+dfsg/debian/changelog	2017-11-23 20:50:59.000000000 +0000
@@ -1,8 +1,14 @@
-gerris (20131206+dfsg-17build1) artful; urgency=medium
+gerris (20131206+dfsg-18) unstable; urgency=medium
 
-  * No-change rebuild for libgfortran soname change.
+  * Team upload.
+  * [7b124aa] Switch from libav-tools to ffmpeg. (Closes: #873192)
+  * [8483d85] Set Standards-Version: 4.1.1
+  * [0cd79ae] Remove --parallel option from d/rules because of compat leverl 10
+  * [1ea3ef6] Set the maximal hardening options
+  * [ca74e70] Remove myself from uploaders
+  * [a2c7839] Remove testsuite field from d/control
 
- -- Matthias Klose <doko@ubuntu.com>  Fri, 04 Aug 2017 17:18:33 +0000
+ -- Anton Gladky <gladk@debian.org>  Thu, 23 Nov 2017 21:50:59 +0100
 
 gerris (20131206+dfsg-17) unstable; urgency=medium
 
diff -Nru gerris-20131206+dfsg/debian/control gerris-20131206+dfsg/debian/control
--- gerris-20131206+dfsg/debian/control	2017-05-13 11:37:58.000000000 +0000
+++ gerris-20131206+dfsg/debian/control	2017-11-23 20:50:12.000000000 +0000
@@ -1,9 +1,7 @@
 Source: gerris
 Maintainer: Debian Science Maintainers <debian-science-maintainers@lists.alioth.debian.org>
-Uploaders: Drew Parsons <dparsons@debian.org>,
-           Anton Gladky <gladk@debian.org>
+Uploaders: Drew Parsons <dparsons@debian.org>
 Section: science
-Testsuite: autopkgtest
 Priority: optional
 Build-Depends: autotools-dev,
                debhelper (>= 10),
@@ -16,7 +14,7 @@
                libnetcdf-dev,
                mpi-default-dev,
                python
-Standards-Version: 3.9.8
+Standards-Version: 4.1.1
 Vcs-Browser: https://anonscm.debian.org/cgit/debian-science/packages/gerris.git
 Vcs-Git: https://anonscm.debian.org/git/debian-science/packages/gerris.git
 Homepage: http://gfs.sourceforge.net/
@@ -70,7 +68,7 @@
 Depends: libgfs-1.3-2 (= ${binary:Version}),
          ${misc:Depends},
          libgts-dev,
-         libav-tools,
+         ffmpeg,
          ${shlibs:Depends}
 Breaks: libgfs-mpi-dev (<< 20131206+dfsg-7)
 Replaces: libgfs-mpi-dev (<< 20131206+dfsg-7)
diff -Nru gerris-20131206+dfsg/debian/rules gerris-20131206+dfsg/debian/rules
--- gerris-20131206+dfsg/debian/rules	2016-09-26 18:33:58.000000000 +0000
+++ gerris-20131206+dfsg/debian/rules	2017-11-23 19:32:48.000000000 +0000
@@ -1,8 +1,10 @@
 #!/usr/bin/make -f
 export DEB_BUILD_OPTIONS=nocheck
 
+export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+
 %:
-	dh $@ --parallel
+	dh $@
 
 override_dh_auto_configure:
 	dh_auto_configure -- --enable-mpi