diff --git a/package.json b/package.json
index ddc66e74..306a95ac 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "immutable": "*",
     "mapbox-gl": "0.40.1",
     "math.gl": ">= 1.0.0-alpha.8",
-    "mjolnir.js": ">=0.4.0",
+    "mjolnir.js": ">=0.4.1",
     "prop-types": "^15.5.7",
     "viewport-mercator-project": ">= 4.2.0-alpha.2"
   },