diff -Nru haskell-semigroupoids-5.3.4/debian/changelog haskell-semigroupoids-5.3.4/debian/changelog
--- haskell-semigroupoids-5.3.4/debian/changelog	2020-05-30 20:23:03.000000000 +0000
+++ haskell-semigroupoids-5.3.4/debian/changelog	2020-07-23 09:31:53.000000000 +0000
@@ -1,3 +1,9 @@
+haskell-semigroupoids (5.3.4-1build1) groovy; urgency=medium
+
+  * Rebuild against new GHC abi.
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Thu, 23 Jul 2020 11:31:53 +0200
+
 haskell-semigroupoids (5.3.4-1) unstable; urgency=medium
 
   * New upstream release