diff --git a/python-devpi-client.spec b/python-devpi-client.spec
index 4b8dc47..3098c41 100644
--- a/python-devpi-client.spec
+++ b/python-devpi-client.spec
@@ -103,6 +103,8 @@ donttest+=" or test_derive_devpi_token or test_derive_legacy_token or test_deriv
 donttest+=" or test_simple_install_missing_venvdir"
 # Broken tests with python3.12 because missing setuptools
 donttest+=" or test_main_example or test_specific_version or test_pkgname_with_dashes"
+# broken tests with tox
+donttest+=" or test_toxresult_forbidden"
 %pytest -k "not ($donttest)"
 %endif