diff --git a/package.json b/package.json
index 33c86c0..a5d39d7 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "mapnik": "^3.5.2",
     "mbtiles": "^0.8.2",
     "md5": "^2.0.0",
-    "mkdirp": "^0.5.1",
+    "mkdirp": "^1.0.0",
     "request": "^2.67.0",
     "rimraf": "^2.5.1",
     "tilejson": "^1.0.1",