diff --git a/test/test_ui.py b/test/test_ui.py
index 041570067..6c23b321f 100644
--- a/test/test_ui.py
+++ b/test/test_ui.py
@@ -1397,6 +1397,10 @@ class PluginTest(TestPluginTestCase):
 
 
 @_common.slow_test()
+@pytest.mark.xfail(
+    os.environ.get("GITHUB_ACTIONS") == "true" and sys.platform == "linux",
+    reason="Completion is for some reason unhappy on Ubuntu 24.04 in CI",
+)
 class CompletionTest(TestPluginTestCase):
     def test_completion(self):
         # Do not load any other bash completion scripts on the system.