diff --git a/common/python-copr-common.spec b/common/python-copr-common.spec
index 036fdfcf2..64f7a3e0a 100644
--- a/common/python-copr-common.spec
+++ b/common/python-copr-common.spec
@@ -36,6 +36,7 @@ BuildRequires: python-setuptools
 BuildRequires: python-pytest
 BuildRequires: python-mock
 BuildRequires: python-requests
+BuildRequires: python-six
 %endif
 
 %if %{with python3}
@@ -43,6 +44,7 @@ BuildRequires: python3-devel
 BuildRequires: python3-setuptools
 BuildRequires: python3-pytest
 BuildRequires: python3-requests
+BuildRequires: python3-six
 %endif
 
 %global _description\