diff --git a/ocaml-variantslib.spec b/ocaml-variantslib.spec
index 9b54ec2..a9747eb 100644
--- a/ocaml-variantslib.spec
+++ b/ocaml-variantslib.spec
@@ -23,10 +23,11 @@ Release:        0
 Summary:        Variants as first class values
 License:        MIT
 Group:          Development/Languages/OCaml
+BuildRoot:      %_tmppath/%name-%version-build
 URL:            https://opam.ocaml.org/packages/variantslib
 Source0:        %{name}-%{version}.tar.xz
 BuildRequires:  ocaml-dune
-BuildRequires:  ocaml-rpm-macros >= 20210121
+BuildRequires:  ocaml-rpm-macros >= 20210409
 BuildRequires:  ocaml(ocaml_base_version) >= 4.04
 BuildRequires:  ocamlfind(base)
 
@@ -43,7 +44,7 @@ The %{name}-devel package contains libraries and signature files for
 developing applications that use %{name}.
 
 %prep
-%autosetup -p1
+%setup -q
 
 %build
 dune_release_pkgs='variantslib'
@@ -58,7 +59,9 @@ dune_release_pkgs='variantslib'
 %ocaml_dune_test
 
 %files -f %{name}.files
+%defattr(-,root,root,-)
 
 %files devel -f %{name}.files.devel
+%defattr(-,root,root,-)
 
 %changelog