diff --git a/ocaml-bin-prot.spec b/ocaml-bin-prot.spec
index 515ae66..d3134c9 100644
--- a/ocaml-bin-prot.spec
+++ b/ocaml-bin-prot.spec
@@ -4,7 +4,7 @@
 Name:           ocaml-%{srcname}
 Version:        0.13.0
 Epoch:          1
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Read and write OCaml values in a type-safe binary protocol
 
 # The project as a whole is MIT, but code in the src subdirectory is BSD.
@@ -104,6 +104,9 @@ find %{buildroot}%{_libdir}/ocaml -name \*.cmxs -exec chmod 0755 {} \+
 %{_libdir}/ocaml/%{upname}/*/*.mli
 
 %changelog
+* Tue Jul 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1:0.13.0-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
+
 * Thu Jul 23 2020 Richard W.M. Jones <rjones@redhat.com> - 1:0.13.0-3
 - Rebuild to resolve build order symbol problems.