diff --git a/linuxptp.spec b/linuxptp.spec
index 004f2cf..0821d40 100644
--- a/linuxptp.spec
+++ b/linuxptp.spec
@@ -4,7 +4,7 @@
 
 Name:		linuxptp
 Version:	3.1
-Release:	1%{?dist}
+Release:	2%{?dist}
 Summary:	PTP implementation for Linux
 
 License:	GPLv2+
@@ -22,6 +22,7 @@ Source11:	https://github.com/mlichvar/clknetsim/archive/%{clknetsim_ver}/clknets
 
 BuildRequires:	gcc gcc-c++ systemd
 BuildRequires:	net-snmp-devel
+BuildRequires: make
 
 %{?systemd_requires}
 
@@ -38,7 +39,7 @@ mv linuxptp-testsuite-%{testsuite_ver}* testsuite
 mv clknetsim-%{clknetsim_ver}* testsuite/clknetsim
 
 %build
-make %{?_smp_mflags} \
+%{make_build} \
 	EXTRA_CFLAGS="$RPM_OPT_FLAGS" \
 	EXTRA_LDFLAGS="$RPM_LD_FLAGS"
 
@@ -61,7 +62,7 @@ echo '.so man8/timemaster.8' > $RPM_BUILD_ROOT%{_mandir}/man5/timemaster.conf.5
 cd testsuite
 # set random seed to get deterministic results
 export CLKNETSIM_RANDOM_SEED=26743
-make %{?_smp_mflags} -C clknetsim
+%{make_build} -C clknetsim
 PATH=..:$PATH ./run
 
 %post
@@ -94,6 +95,9 @@ PATH=..:$PATH ./run
 %{_mandir}/man8/*.8*
 
 %changelog
+* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 3.1-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
+
 * Tue Sep 29 2020 Miroslav Lichvar <mlichvar@redhat.com> 3.1-1
 - update to 3.1