diff --git a/pytest.spec b/pytest.spec
index 6c85582..3360ac5 100644
--- a/pytest.spec
+++ b/pytest.spec
@@ -48,9 +48,13 @@ BuildRequires:  python3-hypothesis
 BuildRequires:  python3-xmlschema
 %if %{with optional_tests}
 BuildRequires:  python3-argcomplete
+#BuildRequires:  python3-asynctest -- no 3.9 rebuild yet
 BuildRequires:  python3-decorator
 BuildRequires:  python3-jinja2
+BuildRequires:  python3-mock
 BuildRequires:  python3-nose
+BuildRequires:  python3-numpy
+BuildRequires:  python3-pytest-xdist
 BuildRequires:  python3-twisted
 %endif
 %if %{with timeout}