diff --git a/NAMESPACE b/NAMESPACE
index 84e942afbadda0ae93a6e92dfe43250d29e526bf..4938f2cdaf0a572639871465bb6e5f49b7bca4dd 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -46,6 +46,7 @@ export(r2ogs6_search_length_algorithm)
 export(r2ogs6_solution)
 export(r2ogs6_source_term)
 export(r2ogs6_time_loop)
+export(r2ogs6_time_stepping)
 export(r2ogs6_tl_process)
 export(r2ogs6_vtkdiff)
 export(read_in_gml)