diff --git a/plugins/modules/rulebook_activation.py b/plugins/modules/rulebook_activation.py
index 27d73abf..255f0cf8 100644
--- a/plugins/modules/rulebook_activation.py
+++ b/plugins/modules/rulebook_activation.py
@@ -459,7 +459,7 @@ def main() -> None:
         (
             "state",
             "present",
-            ("name", "rulebook_name", "decision_environment_name"),
+            ("name", "rulebook_name", "decision_environment_name", "project_name"),
         )
     ]