diff --git a/chrony-dnssrv@.service b/chrony-dnssrv@.service
deleted file mode 100644
index 139ed28..0000000
--- a/chrony-dnssrv@.service
+++ /dev/null
@@ -1,8 +0,0 @@
-[Unit]
-Description=DNS SRV lookup of %I for chrony
-After=chronyd.service network-online.target
-Wants=network-online.target
-
-[Service]
-Type=oneshot
-ExecStart=/usr/libexec/chrony-helper update-dnssrv-servers %I
diff --git a/chrony-dnssrv@.timer b/chrony-dnssrv@.timer
deleted file mode 100644
index 8495e01..0000000
--- a/chrony-dnssrv@.timer
+++ /dev/null
@@ -1,9 +0,0 @@
-[Unit]
-Description=Periodic DNS SRV lookup of %I for chrony
-
-[Timer]
-OnActiveSec=0
-OnUnitInactiveSec=1h
-
-[Install]
-WantedBy=timers.target
diff --git a/chrony.spec b/chrony.spec
index 3e42b2c..dc39db6 100644
--- a/chrony.spec
+++ b/chrony.spec
@@ -5,7 +5,7 @@
 
 Name:           chrony
 Version:        4.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        An NTP client/server
 
 License:        GPLv2
@@ -14,8 +14,6 @@ Source0:        https://download.tuxfamily.org/chrony/chrony-%{version}%{?prerel
 Source1:        https://download.tuxfamily.org/chrony/chrony-%{version}%{?prerelease}-tar-gz-asc.txt
 Source2:        https://chrony.tuxfamily.org/gpgkey-8B1F4A9ADA73D401E3085A0B5FF06F29BA1E013B.asc
 Source3:        chrony.dhclient
-Source5:        chrony-dnssrv@.service
-Source6:        chrony-dnssrv@.timer
 # simulator for test suite
 Source10:       https://github.com/mlichvar/clknetsim/archive/%{clknetsim_ver}/clknetsim-%{clknetsim_ver}.tar.gz
 %{?gitpatch:Patch0: chrony-%{version}%{?prerelease}-%{gitpatch}.patch.gz}
@@ -29,6 +27,7 @@ BuildRequires:  libcap-devel libedit-devel nettle-devel pps-tools-devel
 BuildRequires:  libseccomp-devel
 %endif
 BuildRequires:  gcc gcc-c++ bison systemd gnupg2 net-tools
+BuildRequires: make
 %{?with_nts:BuildRequires: gnutls-devel gnutls-utils}
 
 Requires(pre):  shadow-utils
@@ -140,8 +139,6 @@ install -m 755 -p examples/chrony.nm-dispatcher.dhcp \
         $RPM_BUILD_ROOT%{_prefix}/lib/NetworkManager/dispatcher.d/20-chrony-dhcp
 install -m 644 -p examples/chrony-wait.service \
         $RPM_BUILD_ROOT%{_unitdir}/chrony-wait.service
-install -m 644 -p %{SOURCE5} $RPM_BUILD_ROOT%{_unitdir}/chrony-dnssrv@.service
-install -m 644 -p %{SOURCE6} $RPM_BUILD_ROOT%{_unitdir}/chrony-dnssrv@.timer
 
 cat > $RPM_BUILD_ROOT%{_sysconfdir}/sysconfig/chronyd <<EOF
 # Command-line options for chronyd
@@ -200,7 +197,6 @@ fi
 %{_prefix}/lib/NetworkManager
 %{_prefix}/lib/systemd/ntp-units.d/*.list
 %{_unitdir}/chrony*.service
-%{_unitdir}/chrony*.timer
 %{_mandir}/man[158]/%{name}*.[158]*
 %dir %attr(750,chrony,chrony) %{_localstatedir}/lib/chrony
 %ghost %attr(-,chrony,chrony) %{_localstatedir}/lib/chrony/drift
@@ -208,6 +204,9 @@ fi
 %dir %attr(750,chrony,chrony) %{_localstatedir}/log/chrony
 
 %changelog
+* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 4.0-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
+
 * Wed Oct 07 2020 Miroslav Lichvar <mlichvar@redhat.com> 4.0-1
 - update to 4.0
 - update directory permissions to follow upstream