diff --git a/ocaml-re.spec b/ocaml-re.spec
index f961065..6b7f8a1 100644
--- a/ocaml-re.spec
+++ b/ocaml-re.spec
@@ -6,7 +6,7 @@
 
 Name:           ocaml-re
 Version:        1.9.0
-Release:        19%{?dist}
+Release:        20%{?dist}
 Summary:        A regular expression library for OCaml
 
 License:        LGPLv2 with exceptions
@@ -83,6 +83,9 @@ cp -aLr _build/install/default/lib/* %{buildroot}%{_libdir}/ocaml/
 %{_libdir}/ocaml/re/*.mli
 
 %changelog
+* Mon Mar  1 13:18:58 GMT 2021 Richard W.M. Jones <rjones@redhat.com> - 1.9.0-20
+- OCaml 4.12.0 build
+
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.9.0-19
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild