diff -u tessa-0.3.1/debian/changelog tessa-0.3.1/debian/changelog
--- tessa-0.3.1/debian/changelog
+++ tessa-0.3.1/debian/changelog
@@ -1,3 +1,15 @@
+tessa (0.3.1-6.1build4) xenial; urgency=medium
+
+  * No-change rebuild for openmpi on s390x.
+
+ -- Matthias Klose <doko@ubuntu.com>  Sat, 06 Feb 2016 19:53:14 +0000
+
+tessa (0.3.1-6.1build3) xenial; urgency=medium
+
+  * No-change rebuild for openmpi transition.
+
+ -- Matthias Klose <doko@ubuntu.com>  Mon, 01 Feb 2016 11:40:14 +0000
+
 tessa (0.3.1-6.1build2) wily; urgency=medium
 
   * No-change rebuild for hdf5 soname change.