diff --git a/package.json b/package.json
index af07bd4..6798038 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "async": "~1.2.1",
     "d3": "~3.5.5",
     "fluxxor": "~1.7.3",
-    "immutable": "~3.7.4",
+    "immutable": "~3.8.3",
     "jquery": "~2.1.4",
     "jsonp": "^0.2.0",
     "lodash": "~3.10.0",