diff -pruN 2.12-1/debian/changelog 2.12-1ubuntu2/debian/changelog
--- 2.12-1/debian/changelog	2017-01-21 16:55:05.000000000 +0000
+++ 2.12-1ubuntu2/debian/changelog	2020-12-12 12:04:32.000000000 +0000
@@ -1,3 +1,33 @@
+clblas (2.12-1ubuntu2) hirsute; urgency=medium
+
+  * No-change rebuild for boost soname change.
+
+ -- Matthias Klose <doko@ubuntu.com>  Sat, 12 Dec 2020 13:04:32 +0100
+
+clblas (2.12-1ubuntu1) focal; urgency=medium
+
+  * Build-depend on python2.
+
+ -- Dimitri John Ledkov <xnox@ubuntu.com>  Sun, 09 Feb 2020 07:45:54 +0000
+
+clblas (2.12-1build3) focal; urgency=medium
+
+  * No change rebuild against new boost1.71 ABI
+
+ -- Dimitri John Ledkov <xnox@ubuntu.com>  Mon, 03 Feb 2020 20:05:45 +0000
+
+clblas (2.12-1build2) cosmic; urgency=medium
+
+  * No-change rebuild for boost soname change.
+
+ -- Matthias Klose <doko@ubuntu.com>  Tue, 17 Jul 2018 12:54:04 +0000
+
+clblas (2.12-1build1) bionic; urgency=medium
+
+  * No-change rebuild for boost soname change.
+
+ -- Matthias Klose <doko@ubuntu.com>  Thu, 26 Oct 2017 17:11:18 +0000
+
 clblas (2.12-1) unstable; urgency=medium
 
   * New upstream release
diff -pruN 2.12-1/debian/control 2.12-1ubuntu2/debian/control
--- 2.12-1/debian/control	2017-01-21 16:55:05.000000000 +0000
+++ 2.12-1ubuntu2/debian/control	2020-02-09 07:45:51.000000000 +0000
@@ -1,5 +1,6 @@
 Source: clblas
-Maintainer: Debian Science Maintainers <debian-science-maintainers@lists.alioth.debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Debian Science Maintainers <debian-science-maintainers@lists.alioth.debian.org>
 Uploaders: Ghislain Antony Vaillant <ghisvail@gmail.com>
 Section: science
 Priority: optional
@@ -8,7 +9,7 @@ Build-Depends: cmake,
                libblas-dev,
                libboost-program-options-dev,
                ocl-icd-opencl-dev | opencl-dev,
-               python
+               python2
 Build-Depends-Indep: doxygen
 Standards-Version: 3.9.8
 Vcs-Browser: https://anonscm.debian.org/cgit/debian-science/packages/clblas.git
