diff --git a/docs/reference/contrib/postgres_search.rst b/docs/reference/contrib/postgres_search.rst
index 47fe10e8e..718f3aacc 100644
--- a/docs/reference/contrib/postgres_search.rst
+++ b/docs/reference/contrib/postgres_search.rst
@@ -4,6 +4,8 @@
 PostgreSQL search engine
 ========================
 
+.. versionadded:: 1.10
+
 This contrib module provides a search engine backend for Wagtail using
 `PostgreSQL full-text search capabilities <https://www.postgresql.org/docs/current/static/textsearch.html>`_.