diff --git a/tests/unittests/config/test_cc_ansible.py b/tests/unittests/config/test_cc_ansible.py
index b5b25a64286..5bb00fdcb8e 100644
--- a/tests/unittests/config/test_cc_ansible.py
+++ b/tests/unittests/config/test_cc_ansible.py
@@ -330,6 +330,7 @@ def test_deps(self, m_which):
         """assert exception not raised if package installed"""
         cc_ansible.AnsiblePullDistro(get_cloud().distro).check_deps()
 
+    @mark.serial
     @mock.patch(M_PATH + "subp.subp", return_value=("stdout", "stderr"))
     @mock.patch(M_PATH + "subp.which", return_value=False)
     def test_pip_bootstrap(self, m_which, m_subp):