diff --git a/ghc-hashtables.spec b/ghc-hashtables.spec
index ccb39b7..b9f0d1b 100644
--- a/ghc-hashtables.spec
+++ b/ghc-hashtables.spec
@@ -6,7 +6,7 @@
 
 Name:           ghc-%{pkg_name}
 Version:        1.2.1.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Mutable hash tables in the ST monad
 
 License:        BSD
@@ -88,6 +88,9 @@ in the table need to be rehashed.
 
 
 %changelog
+* Wed Jul 26 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1.2.1.0-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
+
 * Fri Feb 24 2017 Jens Petersen <petersen@redhat.com> - 1.2.1.0-3
 - refresh to cabal-rpm-0.11.1