diff -Nru forensics-extra-2.7/debian/changelog forensics-extra-2.8/debian/changelog
--- forensics-extra-2.7/debian/changelog	2019-02-18 11:16:50.000000000 +0000
+++ forensics-extra-2.8/debian/changelog	2019-04-04 00:01:08.000000000 +0000
@@ -1,3 +1,12 @@
+forensics-extra (2.8) unstable; urgency=medium
+
+  * templates/control.part2: added 'Breaks: cupp' for smooth upgrades from
+    stretch that require switching from cupp to cupp3. Thanks to Andreas
+    Beckmann <anbe@debian.org>. (Closes: #926335)
+  * debian/control: updated.
+
+ -- Joao Eriberto Mota Filho <eriberto@debian.org>  Wed, 03 Apr 2019 21:01:08 -0300
+
 forensics-extra (2.7) unstable; urgency=medium
 
   * list-of-packages-extra: changed isoqlog from FED to FES.
diff -Nru forensics-extra-2.7/debian/control forensics-extra-2.8/debian/control
--- forensics-extra-2.7/debian/control	2019-02-18 11:16:50.000000000 +0000
+++ forensics-extra-2.8/debian/control	2019-04-04 00:01:08.000000000 +0000
@@ -179,6 +179,7 @@
          xz-utils,
          zpaq,
          ${misc:Depends}
+Breaks: cupp (>= 0.0)
 Description: Forensics Environment - extra console components (metapackage)
  This package provides the extra components for a forensics environment. All
  here available tools are text console based. None of these tools were packaged
diff -Nru forensics-extra-2.7/templates/control.part2 forensics-extra-2.8/templates/control.part2
--- forensics-extra-2.7/templates/control.part2	2019-02-18 11:16:38.000000000 +0000
+++ forensics-extra-2.8/templates/control.part2	2019-04-04 00:01:08.000000000 +0000
@@ -1,4 +1,5 @@
          ${misc:Depends}
+Breaks: cupp (>= 0.0)
 Description: Forensics Environment - extra console components (metapackage)
  This package provides the extra components for a forensics environment. All
  here available tools are text console based. None of these tools were packaged