diff -u ocaml-samplerate-0.1.2/debian/changelog ocaml-samplerate-0.1.2/debian/changelog
--- ocaml-samplerate-0.1.2/debian/changelog
+++ ocaml-samplerate-0.1.2/debian/changelog
@@ -1,3 +1,9 @@
+ocaml-samplerate (0.1.2-2build4) bionic; urgency=medium
+
+  * Rebuild against new OCAML ABIs.
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Fri, 27 Oct 2017 22:04:02 +0200
+
 ocaml-samplerate (0.1.2-2build3) artful; urgency=high
 
   * No change rebuild against ocaml 4.04.