diff -Nru purify-2.0.0/debian/changelog purify-2.0.0/debian/changelog
--- purify-2.0.0/debian/changelog	2018-10-12 15:22:28.000000000 +0000
+++ purify-2.0.0/debian/changelog	2018-11-24 09:51:00.000000000 +0000
@@ -1,3 +1,9 @@
+purify (2.0.0-4build1) disco; urgency=medium
+
+  * No-change rebuild against libcasa-casa3
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Sat, 24 Nov 2018 09:51:00 +0000
+
 purify (2.0.0-4) unstable; urgency=medium
 
   * Disable measurement_operator test on aarch64 (Closes: #867273)
diff -Nru purify-2.0.0/debian/control purify-2.0.0/debian/control
--- purify-2.0.0/debian/control	2018-10-12 06:42:00.000000000 +0000
+++ purify-2.0.0/debian/control	2018-11-24 09:51:00.000000000 +0000
@@ -1,7 +1,8 @@
 Source: purify
 Section: science
 Priority: optional
-Maintainer: Debian Astro Team <debian-astro-maintainers@lists.alioth.debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Debian Astro Team <debian-astro-maintainers@lists.alioth.debian.org>
 Uploaders: Gijs Molenaar <gijs@pythonic.nl>, Ole Streicher <olebole@debian.org>
 Build-Depends: casacore-dev,
                catch,