diff --git a/ocaml-ocplib-simplex.spec b/ocaml-ocplib-simplex.spec
index 70e8f5c..7309f5b 100644
--- a/ocaml-ocplib-simplex.spec
+++ b/ocaml-ocplib-simplex.spec
@@ -6,7 +6,7 @@
 
 Name:           ocaml-%{pkgname}
 Version:        0.4
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Simplex algorithm for solving systems of linear inequalities
 
 # The same exception to clause 6 as provided by ocaml applies to this package.
@@ -81,6 +81,9 @@ make local-tests
 %{_libdir}/ocaml/*/*.mli
 
 %changelog
+* Thu Jul 25 2019 Fedora Release Engineering <releng@fedoraproject.org> - 0.4-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild
+
 * Thu Jun 27 2019 Richard W.M. Jones <rjones@redhat.com> - 0.4-2
 - OCaml 4.08.0 (final) rebuild.