diff --git a/docs/source/api.rst b/docs/source/api.rst
index 215105ef..c4ad6e58 100644
--- a/docs/source/api.rst
+++ b/docs/source/api.rst
@@ -101,6 +101,7 @@ For manipulating, traversing, navigating, or mapping over the tree structure.
    DataTree.relative_to
    DataTree.iter_lineage
    DataTree.find_common_ancestor
+   DataTree.map_over_subtree
    map_over_subtree
    DataTree.pipe
    DataTree.match