diff --git a/doc/api/backend_gtk3_api.rst b/doc/api/backend_gtk3_api.rst
index 66c247555df4..bd6d71d6ccb2 100644
--- a/doc/api/backend_gtk3_api.rst
+++ b/doc/api/backend_gtk3_api.rst
@@ -8,5 +8,6 @@ dependency to building the docs.
 .. redirect-from:: /api/backend_gtk3agg_api
 .. redirect-from:: /api/backend_gtk3cairo_api
 
+.. module:: matplotlib.backends.backend_gtk3
 .. module:: matplotlib.backends.backend_gtk3agg
 .. module:: matplotlib.backends.backend_gtk3cairo
diff --git a/doc/api/backend_gtk4_api.rst b/doc/api/backend_gtk4_api.rst
index 8f2e38d885a8..278daa392b13 100644
--- a/doc/api/backend_gtk4_api.rst
+++ b/doc/api/backend_gtk4_api.rst
@@ -8,5 +8,6 @@ dependency to building the docs.
 .. redirect-from:: /api/backend_gtk4agg_api
 .. redirect-from:: /api/backend_gtk4cairo_api
 
+.. module:: matplotlib.backends.backend_gtk4
 .. module:: matplotlib.backends.backend_gtk4agg
 .. module:: matplotlib.backends.backend_gtk4cairo
diff --git a/doc/api/backend_wx_api.rst b/doc/api/backend_wx_api.rst
index abf506a161be..bec832da0c13 100644
--- a/doc/api/backend_wx_api.rst
+++ b/doc/api/backend_wx_api.rst
@@ -7,5 +7,6 @@ dependency to building the docs.
 
 .. redirect-from:: /api/backend_wxagg_api
 
+.. module:: matplotlib.backends.backend_wx
 .. module:: matplotlib.backends.backend_wxagg
 .. module:: matplotlib.backends.backend_wxcairo