diff --git a/ansible_mitogen/planner.py b/ansible_mitogen/planner.py
index faf8d197..61156482 100644
--- a/ansible_mitogen/planner.py
+++ b/ansible_mitogen/planner.py
@@ -301,6 +301,9 @@ class NewStylePlanner(ScriptPlanner):
 
     @classmethod
     def detect(cls, path, source):
+        if b'from ansible_collections.openstack.' in source:
+            cls.marker = b'from ansible_collections.openstack.'
+        LOG.debug('cls.marker: %r, source: %r', cls.marker, source)
         return cls.marker in source
 
     def _get_interpreter(self):