diff --git a/bioblend/galaxy/notifications/__init__.py b/bioblend/galaxy/notifications/__init__.py
index 5b62c7f9c..4a970fbdc 100755
--- a/bioblend/galaxy/notifications/__init__.py
+++ b/bioblend/galaxy/notifications/__init__.py
@@ -20,6 +20,10 @@
 
 
 class NotificationClient(Client):
+    """
+    This endpoint only works on Galaxy 23.01 or later.
+    """
+
     module = "notifications"
 
     def __init__(self, galaxy_instance: "GalaxyInstance") -> None: