diff --git a/ocaml-parsexp.spec b/ocaml-parsexp.spec
index ab20a03..3e4765a 100644
--- a/ocaml-parsexp.spec
+++ b/ocaml-parsexp.spec
@@ -6,7 +6,7 @@
 
 Name:           ocaml-%{srcname}
 Version:        0.13.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        S-expression parsing library
 
 License:        MIT
@@ -43,7 +43,7 @@ parsexp_io.
 %package        devel
 Summary:        Development files for %{name}
 Requires:       %{name}%{?_isa} = %{version}-%{release}
-Requires:       ocaml-sexplib0-devel%{?_isa}
+Requires:       ocaml-base-devel%{?_isa}
 
 %description    devel
 The %{name}-devel package contains libraries and signature files for
@@ -53,7 +53,7 @@ developing applications that use %{name}.
 %autosetup -n %{srcname}-%{version}
 
 %build
-dune build
+dune build %{?_smp_mflags}
 
 %install
 dune install --destdir=%{buildroot}
@@ -94,5 +94,9 @@ dune runtest
 %{_libdir}/ocaml/%{srcname}/*.mli
 
 %changelog
+* Thu Jan 16 2020 Jerry James <loganjerry@gmail.com> - 0.13.0-2
+- Change -devel subpackage Requires to ocaml-base-devel
+- Build in parallel
+
 * Fri Jan 10 2020 Jerry James <loganjerry@gmail.com> - 0.13.0-1
 - Initial RPM