diff --git a/supermin.changes b/supermin.changes
index e14823f..22cd8a9 100644
--- a/supermin.changes
+++ b/supermin.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed May 25 14:26:48 UTC 2016 - olaf@aepfle.de
+
+- Preserve bytecode
+
 -------------------------------------------------------------------
 Fri Oct 23 15:16:31 UTC 2015 - olaf@aepfle.de
 
diff --git a/supermin.spec b/supermin.spec
index 1c27f9e..b5af1b7 100644
--- a/supermin.spec
+++ b/supermin.spec
@@ -19,6 +19,7 @@
 Name:           supermin
 Version:        5.1.13
 Release:        0
+%{ocaml_preserve_bytecode}
 Url:            http://libguestfs.org/
 Summary:        Bootstrapping tool for creating supermin appliances
 License:        GPL-2.0
@@ -42,6 +43,7 @@ BuildRequires:  glibc-devel-static
 BuildRequires:  ncurses-devel
 BuildRequires:  ocaml
 BuildRequires:  ocaml-findlib
+BuildRequires:  ocaml-rpm-macros >= 4.02.1
 BuildRequires:  pkg-config
 BuildRequires:  pkgconfig(com_err)
 BuildRequires:  pkgconfig(ext2fs)