diff --git a/readme.md b/readme.md
index 5e079a7..1844403 100644
--- a/readme.md
+++ b/readme.md
@@ -431,6 +431,8 @@ unist:
 
 ### List of utilities
 
+*   [`unist-util-ancestor`](https://github.com/gorango/unist-util-ancestor)
+    — get the common ancestor of one or more nodes
 *   [`unist-util-assert`](https://github.com/syntax-tree/unist-util-assert)
     — assert nodes
 *   [`unist-util-filter`](https://github.com/syntax-tree/unist-util-filter)