diff --git a/ocaml-num.spec b/ocaml-num.spec
index bcdf823..515cf22 100644
--- a/ocaml-num.spec
+++ b/ocaml-num.spec
@@ -1,6 +1,6 @@
 Name:           ocaml-num
 Version:        1.1
-Release:        12%{?dist}
+Release:        13%{?dist}
 Summary:        Legacy Num library for arbitrary-precision integer and rational arithmetic
 License:        LGPLv2+ with exceptions
 
@@ -91,6 +91,9 @@ find $OCAMLFIND_DESTDIR -name '*.cmti' -delete
 
 
 %changelog
+* Thu Jul 25 2019 Fedora Release Engineering <releng@fedoraproject.org> - 1.1-13
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild
+
 * Thu Jun 27 2019 Richard W.M. Jones <rjones@redhat.com> - 1.1-12
 - OCaml 4.08.0 (final) rebuild.