diff --git a/package.json b/package.json
index fb99174..4169dc4 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,6 @@
   },
   "dependencies": {
     "@mapbox/geojson-normalize": "0.0.1",
-    "geojson-flatten": "~0.2.1"
+    "geojson-flatten": "^1.0.4"
   }
 }