diff --git a/python-Traits.spec b/python-Traits.spec
index 03c955f..53ce356 100644
--- a/python-Traits.spec
+++ b/python-Traits.spec
@@ -41,7 +41,6 @@ Summary:        %{summary}
 BuildRequires:  python%{python3_pkgversion}-devel
 BuildRequires:  python%{python3_pkgversion}-setuptools
 BuildRequires:  python%{python3_pkgversion}-Cython
-BuildRequires:  python%{python3_pkgversion}-mock
 BuildRequires:  python%{python3_pkgversion}-numpy
 BuildRequires:  python%{python3_pkgversion}-six
 BuildRequires:  python%{python3_pkgversion}-sphinx