diff --git a/units.spec b/units.spec
index 9c0d150..8cbce73 100644
--- a/units.spec
+++ b/units.spec
@@ -1,13 +1,14 @@
 Summary: A utility for converting amounts from one unit to another
 Name: units
 Version: 2.21
-Release: 1%{?dist}
+Release: 2%{?dist}
 Source: https://ftp.gnu.org/gnu/units/%{name}-%{version}.tar.gz
 URL: https://www.gnu.org/software/units/units.html
 License: GPLv3+
 BuildRequires: automake
 BuildRequires: bison
 BuildRequires: gcc
+BuildRequires: make
 BuildRequires: ncurses-devel
 BuildRequires: python3-devel
 BuildRequires: readline-devel
@@ -54,6 +55,9 @@ make check
 %{_mandir}/man1/*
 
 %changelog
+* Wed Jan 27 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2.21-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
+
 * Mon Nov 16 2020 Kamil Dudka <kdudka@redhat.com> - 2.21-1
 - new upstream release