diff --git a/package.json b/package.json
index c4f5aa7..53f9eb7 100644
--- a/package.json
+++ b/package.json
@@ -35,6 +35,6 @@
     "uglifycss": "0.0.27"
   },
   "dependencies": {
-    "d3": "^4.10.0"
+    "d3": ">=4.10.0"
   }
 }