diff --git a/package.json b/package.json
index effda37..8c5683d 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
   "homepage": "https://github.com/blakeembrey/popsicle-resolve",
   "devDependencies": {
     "chai": "^4.0.0",
-    "es6-promise": "^4.0.0",
+    "es6-promise": "^4.2.3",
     "istanbul": "^0.4.2",
     "mocha": "^4.0.0",
     "nock": "^9.0.0",