diff --git a/alsa-sof-firmware.spec b/alsa-sof-firmware.spec
index e61e51b..5ae4f3b 100644
--- a/alsa-sof-firmware.spec
+++ b/alsa-sof-firmware.spec
@@ -3,18 +3,21 @@
 %define _binaries_in_noarch_packages_terminate_build   0
 %global _firmwarepath  /usr/lib/firmware
 
-%global sof_version 1.7
+%global sof_ver 1.8
+%global sof_ver_pre rc2
+%global sof_ver_rel %{?sof_ver_pre:.%{sof_ver_pre}}
+%global sof_ver_pkg v%{sof_ver}%{?sof_ver_pre:-%{sof_ver_pre}}
 
 %global tplg_version 1.2.4
 
 Summary:        Firmware and topology files for Sound Open Firmware project
 Name:           alsa-sof-firmware
-Version:        %{sof_version}
-Release:        1%{?dist}
+Version:        %{sof_ver}
+Release:        1%{?sof_ver_rel}%{?dist}
 # See later in the spec for a breakdown of licensing
 License:        BSD
 URL:            https://github.com/thesofproject/sof-bin
-Source:         https://github.com/thesofproject/sof-bin/archive/v%{sof_version}/sof-bin-%{sof_version}.tar.gz
+Source:         https://github.com/thesofproject/sof-bin/releases/download/%{sof_ver_pkg}/sof-bin-%{sof_ver_pkg}.tar.gz
 BuildRequires:  alsa-topology >= %{tplg_version}
 BuildRequires:  alsa-topology-utils >= %{tplg_version}
 Conflicts:      alsa-firmware <= 1.2.1-6
@@ -34,15 +37,15 @@ License:        BSD
 This package contains the debug files for the Sound Open Firmware project.
 
 %prep
-%autosetup -n sof-bin-%{sof_version}
+%autosetup -n sof-bin-%{sof_ver_pkg}
 
 mkdir -p firmware/intel/sof
 
 # we have the version in the package name
-mv sof-v%{sof_version}/* firmware/intel/sof
+mv sof-%{sof_ver_pkg}/* firmware/intel/sof
 
 # move topology files
-mv sof-tplg-v%{sof_version} firmware/intel/sof-tplg
+mv sof-tplg-%{sof_ver_pkg} firmware/intel/sof-tplg
 
 # remove NXP firmware files
 rm LICENCE.NXP