diff --git a/package.json b/package.json
index 33c86c0..f49c678 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "async": "^1.5.2",
     "carto": "^0.15.3",
     "express": "^4.13.3",
-    "mapnik": "^3.5.2",
+    "mapnik": "^4.0.0",
     "mbtiles": "^0.8.2",
     "md5": "^2.0.0",
     "mkdirp": "^0.5.1",