diff --git a/lib/index.js b/lib/index.js
index f3901d4..12b83a1 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -6,6 +6,7 @@ var xtend = require('xtend');
 var u = require('unist-builder');
 var visit = require('unist-util-visit');
 var position = require('unist-util-position');
+var generated = require('unist-util-generated');
 var definitions = require('mdast-util-definitions');
 var one = require('./one');
 var footer = require('./footer');
@@ -48,7 +49,7 @@ function factory(tree, options) {
 
     ctx = left && left.position ? left : {position: left};
 
-    if (!position.generated(ctx)) {
+    if (!generated(ctx)) {
       right.position = {
         start: position.start(ctx),
         end: position.end(ctx)
diff --git a/package.json b/package.json
index c236d10..1947a09 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,8 @@
     "trim": "0.0.1",
     "trim-lines": "^1.0.0",
     "unist-builder": "^1.0.1",
-    "unist-util-position": "^2.0.1",
+    "unist-util-generated": "^1.1.0",
+    "unist-util-position": "^3.0.0",
     "unist-util-visit": "^1.1.0",
     "xtend": "^4.0.1"
   },