diff --git a/python-ruamel-yaml.spec b/python-ruamel-yaml.spec
index 727b342..6571170 100644
--- a/python-ruamel-yaml.spec
+++ b/python-ruamel-yaml.spec
@@ -23,6 +23,7 @@ It is a derivative of Kirill Simonov’s PyYAML 3.11
 
 %package -n     python%{python3_pkgversion}-%{pname}
 Summary:        YAML 1.2 loader/dumper package for Python
+BuildRequires:  python%{python3_pkgversion}-ruamel-yaml-clib
 BuildRequires:  python%{python3_pkgversion}-devel
 BuildRequires:  python%{python3_pkgversion}-setuptools
 # For tests