diff --git a/package.json b/package.json
index 6ee6363..a12b505 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "block-elements": "^1.1.0",
     "embedly-url": "^1.0.0",
     "embeds": "^2.6.0",
-    "es6-set": "^0.1.2",
+    "es6-set": "^0.1.5",
     "generate-function": "^2.0.0",
     "get-youtube-id": "^1.0.0",
     "lodash.find": "^4.2.0",