diff --git a/libs/ardour/luabindings.cc b/libs/ardour/luabindings.cc
index 9ee735c756..6c33f4ce98 100644
--- a/libs/ardour/luabindings.cc
+++ b/libs/ardour/luabindings.cc
@@ -3073,6 +3073,8 @@ LuaBindings::common (lua_State* L)
 		.addFunction ("new_route_group", &Session::new_route_group)
 		.addFunction ("session_range_is_free", &Session::session_range_is_free)
 		.addFunction ("set_session_range_is_free", &Session::set_session_range_is_free)
+		.addFunction ("set_session_extents", &Session::set_session_extents)
+		.addFunction ("maybe_update_session_range", &Session::maybe_update_session_range)
 		.addFunction ("remove_route", &Session::remove_route)
 		.addFunction ("remove_routes", &Session::remove_routes)
 		.addFunction ("remove_route_group", (void (Session::*)(RouteGroup*))&Session::remove_route_group)