diff --git a/package.json b/package.json
index 0e9a83dd..aa889431 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "private": true,
   "dependencies": {
     "bower": "1.x.x",
-    "esprima": "^3.1.0",
+    "esprima": "^4.0.1",
     "jshint": "latest",
     "live-reload": "1.x.x",
     "mkdirp": "^0.5.1",