diff -Nru swauth-1.2.0/debian/changelog swauth-1.2.0/debian/changelog
--- swauth-1.2.0/debian/changelog	2017-07-17 09:29:35.000000000 +0100
+++ swauth-1.2.0/debian/changelog	2018-06-04 10:51:41.000000000 +0100
@@ -1,3 +1,10 @@
+swauth (1.2.0-3ubuntu1) artful; urgency=medium
+
+  * Add Breaks and Replaces rules to ensure python-swauth package removed on upgrade.
+    - LP: #1772681
+
+ -- Edward Hope-Morley <edward.hope-morley@canonical.com>  Wed, 23 May 2018 12:48:46 +0100
+
 swauth (1.2.0-3) unstable; urgency=medium
 
   * Fix FTBFS with new Sphinx (Closes: #868598)
diff -Nru swauth-1.2.0/debian/control swauth-1.2.0/debian/control
--- swauth-1.2.0/debian/control	2017-07-17 09:29:35.000000000 +0100
+++ swauth-1.2.0/debian/control	2018-06-04 10:50:25.000000000 +0100
@@ -29,6 +29,10 @@
          python-swiftclient,
          ${misc:Depends},
          ${python:Depends},
+Breaks:
+ python-swauth,
+Replaces:
+ python-swauth,
 Provides: ${python:Provides},
 Suggests: swauth-doc
 Description: alternative authentication system for Swift