diff -Nru tcltk-defaults-8.6.0+6ubuntu2/debian/changelog tcltk-defaults-8.6.0+6ubuntu3/debian/changelog
--- tcltk-defaults-8.6.0+6ubuntu2/debian/changelog	2014-03-03 21:30:50.000000000 +0000
+++ tcltk-defaults-8.6.0+6ubuntu3/debian/changelog	2014-03-06 17:22:56.000000000 +0000
@@ -1,3 +1,10 @@
+tcltk-defaults (8.6.0+6ubuntu3) trusty; urgency=medium
+
+  * Add conflicts on tcl-lib and tcl8.5-lib to facilitate apt choosing the
+    correct upgrade path (LP: #1280782)
+
+ -- Brian Murray <brian@ubuntu.com>  Thu, 06 Mar 2014 09:22:31 -0800
+
 tcltk-defaults (8.6.0+6ubuntu2) trusty; urgency=medium
 
   * Add conflicts on tk-lib and tk8.5-lib to facilitate apt choosing the
diff -Nru tcltk-defaults-8.6.0+6ubuntu2/debian/control tcltk-defaults-8.6.0+6ubuntu3/debian/control
--- tcltk-defaults-8.6.0+6ubuntu2/debian/control	2014-03-03 21:31:29.000000000 +0000
+++ tcltk-defaults-8.6.0+6ubuntu3/debian/control	2014-03-06 17:20:13.000000000 +0000
@@ -17,6 +17,7 @@
 Architecture: any
 Depends: tcl8.6 (>= 8.6.0-2), ${misc:Depends}
 Breaks: tcl8.3 (<< 8.3.5-15), tcl8.4 (<< 8.4.20-2), tcl8.5 (<< 8.5.14-3), tcl8.6 (<< 8.6.0-2)
+Conflicts: tcl-lib, tcl8.5-lib
 Provides: tclsh
 Multi-Arch: foreign
 Description: Tool Command Language (default version) - shell