diff -Nru haskell-polynomial-0.7.3/debian/changelog haskell-polynomial-0.7.3/debian/changelog
--- haskell-polynomial-0.7.3/debian/changelog	2020-07-03 05:03:50.000000000 +0000
+++ haskell-polynomial-0.7.3/debian/changelog	2020-07-22 20:54:15.000000000 +0000
@@ -1,3 +1,9 @@
+haskell-polynomial (0.7.3-5build4) groovy; urgency=medium
+
+  * Rebuild against new GHC abi.
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Wed, 22 Jul 2020 22:54:15 +0200
+
 haskell-polynomial (0.7.3-5build3) groovy; urgency=medium
 
   * No-change rebuild against new GHC ABIs