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-rw-r--r--docs/ref/contrib/postgres/indexes.txt4
1 files changed, 3 insertions, 1 deletions
diff --git a/docs/ref/contrib/postgres/indexes.txt b/docs/ref/contrib/postgres/indexes.txt
index 7bf26fb117..9b8ab5ffa2 100644
--- a/docs/ref/contrib/postgres/indexes.txt
+++ b/docs/ref/contrib/postgres/indexes.txt
@@ -17,7 +17,9 @@ available from the ``django.contrib.postgres.indexes`` module.
Creates a `gin index
<https://www.postgresql.org/docs/current/static/gin.html>`_.
- To use this index, you need to activate the `btree_gin extension
+ To use this index on data types not in the `built-in operator classes
+ <https://www.postgresql.org/docs/current/static/gin-builtin-opclasses.html>`_,
+ you need to activate the `btree_gin extension
<https://www.postgresql.org/docs/current/static/btree-gin.html>`_ on
PostgreSQL. You can install it using the
:class:`~django.contrib.postgres.operations.BtreeGinExtension` migration