diff --git a/docs/source/topics/data_types.rst b/docs/source/topics/data_types.rst
index a2eb282447..6d7eb982bb 100644
--- a/docs/source/topics/data_types.rst
+++ b/docs/source/topics/data_types.rst
@@ -1122,6 +1122,11 @@ Creating a new data type is as simple as creating a new sub class of the base :c
     class NewData(Data):
         """A new data type that wraps a single value."""
 
+.. note::
+
+    To be able to use the new ``Data`` plugin, it must be registered using an entry point.
+    See :ref:`What is an entry point?<topics:plugins:entrypoints>` for details.
+
 At this point, our new data type does nothing special.
 Typically, one creates a new data type to represent a specific type of data.
 For the purposes of this example, let's assume that the goal of our ``NewData`` type is to store a single numerical value.