diff -Nru gap-io-4.7.0+ds/debian/changelog gap-io-4.7.0+ds/debian/changelog
--- gap-io-4.7.0+ds/debian/changelog	2019-07-28 12:05:09.000000000 +0000
+++ gap-io-4.7.0+ds/debian/changelog	2020-05-01 19:21:07.000000000 +0000
@@ -1,3 +1,25 @@
+gap-io (4.7.0+ds-2ubuntu1) groovy; urgency=low
+
+  * Merge from Debian unstable.  Remaining changes:
+    - Don't run http tests, the implementation doesn't take care of proxies.
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Fri, 01 May 2020 21:21:07 +0200
+
+gap-io (4.7.0+ds-2) unstable; urgency=medium
+
+  * Debianization:
+    - debian/copyright:
+      - copyright year tuple, update;
+    - debian/control:
+      - Maintainer address, update;
+      - Rules-Requires-Root, introduce and set to no;
+      - Depends field:
+        - gap, bump to 4.11.0 ;
+        - gapkernel:Depends substvars, introduce (Closes: #958495);
+      - Standards Version, bump to 4.5.0 (no change).
+
+ -- Jerome Benoit <calculus@rezozer.net>  Thu, 30 Apr 2020 19:04:51 +0000
+
 gap-io (4.7.0+ds-1ubuntu1) eoan; urgency=low
 
   * Merge from Debian unstable.  Remaining changes:
diff -Nru gap-io-4.7.0+ds/debian/control gap-io-4.7.0+ds/debian/control
--- gap-io-4.7.0+ds/debian/control	2019-07-27 04:45:35.000000000 +0000
+++ gap-io-4.7.0+ds/debian/control	2020-05-01 19:21:05.000000000 +0000
@@ -1,15 +1,15 @@
 Source: gap-io
 Section: math
 Priority: optional
-Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
-XSBC-Original-Maintainer: Debian Science Maintainers <debian-science-maintainers@lists.alioth.debian.org>
+Maintainer: Debian Science Maintainers <debian-science-maintainers@alioth-lists.debian.net>
 Uploaders: Jerome Benoit <calculus@rezozer.net>
+Rules-Requires-Root: no
 Build-Depends:
  debhelper-compat (= 12),
  libtool, autoconf-archive,
- gap (>=4r10p2-1~), gap-dev (>=4r10p2-1~), gap-gapdoc, gap-autodoc (>=2018.09.20), libgmp-dev,
+ gap (>=4.11.0), gap-dev (>=4.11.0), gap-gapdoc, gap-autodoc (>=2018.09.20), libgmp-dev,
  texlive-latex-extra, texlive-fonts-recommended
-Standards-Version: 4.4.0
+Standards-Version: 4.5.0
 Homepage: https://www.gap-system.org/Packages/io.html
 Vcs-Git: https://salsa.debian.org/science-team/gap-io.git
 Vcs-Browser: https://salsa.debian.org/science-team/gap-io
@@ -18,7 +18,7 @@
 Provides: gap-pkg-io
 Architecture: any
 Pre-Depends: ${misc:Pre-Depends}
-Depends: ${misc:Depends}, ${shlibs:Depends}, gap (>=4r10p2-1)
+Depends: ${misc:Depends}, ${shlibs:Depends}, ${gapkernel:Depends}, gap (>=4.11.0)
 Description: low level C library IO bindings for GAP
  GAP is a system for computational discrete algebra with particular
  emphasis on computational group theory, but which has already proved
diff -Nru gap-io-4.7.0+ds/debian/copyright gap-io-4.7.0+ds/debian/copyright
--- gap-io-4.7.0+ds/debian/copyright	2019-07-27 04:45:35.000000000 +0000
+++ gap-io-4.7.0+ds/debian/copyright	2020-04-30 21:17:59.000000000 +0000
@@ -49,12 +49,12 @@
 
 Files: *
 Copyright:
- 2006-2019 Max Neunhoeffer <max@9hoeffer.de>
+ 2006-2020 Max Neunhoeffer <max@9hoeffer.de>
 License: GPL-3+
 
 Files: debian/*
 Copyright:
- 2014-2019 Jerome Benoit <calculus@rezozer.net>
+ 2014-2020 Jerome Benoit <calculus@rezozer.net>
 License: GPL-3+
 
 License: GPL-3+
diff -Nru gap-io-4.7.0+ds/debian/rules gap-io-4.7.0+ds/debian/rules
--- gap-io-4.7.0+ds/debian/rules	2019-07-27 04:45:35.000000000 +0000
+++ gap-io-4.7.0+ds/debian/rules	2020-04-30 21:17:59.000000000 +0000
@@ -6,6 +6,10 @@
 
 DEB_BUILD_MULTIARCH  ?= $(shell dpkg-architecture -qDEB_BUILD_MULTIARCH)
 DEB_BUILD_GAP_INFO_ARCH ?= $(shell echo 'Print(GAPInfo.Architecture);' | $(CGAP) -A -q -T)
+DEB_BUILD_GAP_KERNEL_MAJOR_VERSION ?= $(shell sed -n -e 's/^GAP_KERNEL_MAJOR_VERSION=//p' /usr/lib/gap/sysinfo.gap )
+
+SUBSTVARS = -Vgapkernel:Depends="gap-kernel-$(DEB_BUILD_GAP_KERNEL_MAJOR_VERSION)"
+
 
 default:
 	@uscan --no-conf --dehs --report || true
@@ -28,3 +32,6 @@
 
 override_dh_installchangelogs:
 	dh_installchangelogs --keep CHANGES
+
+override_dh_gencontrol:
+	dh_gencontrol -- $(SUBSTVARS)