diff --git a/ocaml-gettext.spec b/ocaml-gettext.spec
index d317fea..6c0f84b 100644
--- a/ocaml-gettext.spec
+++ b/ocaml-gettext.spec
@@ -3,7 +3,7 @@
 
 Name:           ocaml-gettext
 Version:        0.3.4
-Release:        7%{?dist}
+Release:        8%{?dist}
 Summary:        OCaml library for i18n
 
 License:        LGPLv2+ with exceptions
@@ -12,11 +12,11 @@ ExcludeArch:    sparc64 s390 s390x
 
 Source0:        http://forge.ocamlcore.org/frs/download.php/676/ocaml-gettext-%{version}.tar.gz
 
-BuildRequires:  ocaml >= 3.12.0-3
-BuildRequires:  ocaml-findlib-devel >= 1.2.1-3
+BuildRequires:  ocaml >= 4.00.1
+BuildRequires:  ocaml-findlib-devel >= 1.3.3-3
 BuildRequires:  ocaml-ocamldoc
 BuildRequires:  ocaml-camlp4-devel
-BuildRequires:  ocaml-fileutils-devel >= 0.4.0
+BuildRequires:  ocaml-fileutils-devel >= 0.4.4-4
 BuildRequires:  docbook-style-xsl
 BuildRequires:  libxslt
 BuildRequires:  libxml2
@@ -195,6 +195,9 @@ strip $RPM_BUILD_ROOT%{_bindir}/ocaml-gettext
 
 
 %changelog
+* Tue Nov 27 2012 Richard W.M. Jones <rjones@redhat.com> - 0.3.4-8
+- BR >= OCaml 4.00.1 so we can't be built against the wrong OCaml.
+
 * Fri Oct 19 2012 Richard W.M. Jones <rjones@redhat.com> - 0.3.4-7
 - Rebuild for OCaml 4.00.1.
 - Remove Group lines from the spec file.