diff --git a/sos.spec b/sos.spec
index 6b83640..1d40a31 100644
--- a/sos.spec
+++ b/sos.spec
@@ -11,6 +11,7 @@ BuildArch: noarch
 Url: http://github.com/sosreport/sos
 BuildRequires: python3-devel
 BuildRequires: gettext
+BuildRequires: python3-six
 Requires: libxml2-python3
 Requires: bzip2
 Requires: xz
@@ -49,6 +50,7 @@ install -Dm644 %{name}.conf %{buildroot}%{_sysconfdir}/%{name}.conf
 %changelog
 * Mon Jun 25 2018 Sandro Bonazzola <sbonazzo@redhat.com> - 3.6-1
 - Rebase on upstream 3.6
+- Added python3-six build requirement
 - Resolves: BZ#1594443
 
 * Tue Jun 19 2018 Miro Hrončok <mhroncok@redhat.com> - 3.5.1-2