diff --git a/ocaml-ppx-tools.spec b/ocaml-ppx-tools.spec
index 649af87..6412064 100644
--- a/ocaml-ppx-tools.spec
+++ b/ocaml-ppx-tools.spec
@@ -7,7 +7,7 @@
 
 Name:           ocaml-%{srcname}
 Version:        6.3
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Tools for authors of ppx rewriters
 
 License:        MIT
@@ -108,6 +108,9 @@ dune runtest
 %license LICENSE
 
 %changelog
+* Mon Mar  1 12:17:35 GMT 2021 Richard W.M. Jones <rjones@redhat.com> - 6.3-4
+- OCaml 4.12.0 build
+
 * Sat Feb 20 2021 Jerry James <loganjerry@gmail.com> - 6.3-3
 - Bump and rebuild