diff --git a/python-ruamel-yaml-clib.spec b/python-ruamel-yaml-clib.spec
index c76c63d..ba983f2 100644
--- a/python-ruamel-yaml-clib.spec
+++ b/python-ruamel-yaml-clib.spec
@@ -26,6 +26,7 @@ BuildRequires:  python3-setuptools
 BuildRequires:  python3-Cython
 
 Requires:       python3-setuptools
+Requires:       python3-ruamel-yaml
 
 %description -n python3-%{pname}
 It is the C based reader/scanner and emitter for ruamel.yaml.
@@ -57,6 +58,7 @@ rmdir ruamel.yaml.clib
 %changelog
 * Thu Nov 12 2020 Miro Hrončok <mhroncok@redhat.com> - 0.1.2-5
 - Force regenerating C files from Cython sources
+- Require python3-ruamel-yaml
 
 * Wed Jul 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.1.2-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild