diff --git a/debian/bind9.maintscript b/debian/bind9.maintscript
index 6b43b8e2cf33116e446bcf0e481ae0a9f78b31d5..44e049bf9ebfe3e3988c1900dc5490da29ee4e2d 100644
--- a/debian/bind9.maintscript
+++ b/debian/bind9.maintscript
@@ -3,4 +3,3 @@ mv_conffile /etc/default/bind9 /etc/default/named 1:9.12.0~
 mv_conffile /etc/init.d/bind   /etc/init.d/named  1:9.13.6~
 mv_conffile /etc/init.d/bind9  /etc/init.d/named  1:9.12.0~
 rm_conffile /etc/bind/db.root                     1:9.11.4+dfsg-3~
-rm_conffile /etc/apparmor.d/local/usr.sbin.named  1:9.11.4+dfsg-1~
diff --git a/debian/compat b/debian/compat
new file mode 100644
index 0000000000000000000000000000000000000000..f599e28b8ab0d8c9c57a486c89c4a5132dcbd3b2
--- /dev/null
+++ b/debian/compat
@@ -0,0 +1 @@
+10
diff --git a/debian/control b/debian/control
index 3d4adb0bc72547414bdfdb985ac53cb9b20cbef8..1b75e342e20a139331abed35e9a3e3c2d2920bc5 100644
--- a/debian/control
+++ b/debian/control
@@ -5,7 +5,7 @@ Maintainer: Debian DNS Team <team+dns@tracker.debian.org>
 Uploaders: Ondřej Surý <ondrej@debian.org>,
            Bernhard Schmidt <berni@debian.org>
 Build-Depends: bison,
-               debhelper-compat (= 12),
+               debhelper (>= 10),
                dh-apparmor,
                dh-exec,
                libcap2-dev [linux-any],
@@ -31,15 +31,16 @@ Build-Depends: bison,
                pkg-config,
                protobuf-c-compiler,
                python3,
+               python3-sphinx,
+               python3-sphinx-rtd-theme,
                zlib1g-dev
 Build-Depends-Indep: fonts-freefont-otf,
                      latexmk,
-                     python3-sphinx,
-                     python3-sphinx-rtd-theme,
                      texlive-fonts-extra,
                      texlive-latex-recommended,
+                     texlive-plain-generic | texlive-generic-extra,
                      texlive-xetex,
-                     xindy
+                     xindy | texlive-xetex (<< 2018.20190227-2~)
 Standards-Version: 4.1.2
 Vcs-Browser: https://salsa.debian.org/dns-team/bind9
 Vcs-Git: https://salsa.debian.org/dns-team/bind9.git -b isc/9.18
diff --git a/debian/gbp.conf b/debian/gbp.conf
index 8ec461034135ddc145ad4d40aa856ff625569b73..9b816385b5e8271d7e5bb5baec72be63ff7a5dba 100644
--- a/debian/gbp.conf
+++ b/debian/gbp.conf
@@ -1,5 +1,5 @@
 [DEFAULT]
-debian-branch = isc/9.18
+debian-branch = isc/backports/9.18
 upstream-branch = upstream/9.18
 pristine-tar = True