diff --git a/tests/test_cat_mode.py b/tests/test_cat_mode.py
index c5c065d3..7a822888 100644
--- a/tests/test_cat_mode.py
+++ b/tests/test_cat_mode.py
@@ -489,6 +489,7 @@ def test_every_referenced_skill_still_exists(self):
             "ls",
             "owner-serve",
             "strace",
+            "intervention-must-automate",
             # Absolute-negative words in backticks, not skill names.
             "only",
             "never",