diff --git a/package.json b/package.json
index 90875fd..6eb5edd 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   },
   "dependencies": {
     "assetgraph": "^1.12.1",
-    "assetgraph-builder": "^2.5.1",
+    "assetgraph-builder": "^6.9.0",
     "autoprefixer": "^4.0.0",
     "autoprefixer-core": "^4.0.1",
     "bower": "^1.3.12",