diff --git a/.jshintrc b/.jshintrc
index e647c1be..412e2c6e 100644
--- a/.jshintrc
+++ b/.jshintrc
@@ -1,35 +1,36 @@
 {
-    "curly": true,
-    "eqeqeq": true,
-    "immed": true,
-    "latedef": true,
-    "noarg": true,
-    "sub": true,
-    "undef": true,
-    "boss": true,
-    "eqnull": true,
-    "node": true,
-    "browser": true,
-    "expr":true,
-    "globals" : {
-        "it"         : false,
-        "xit"        : false,
-        "describe"   : false,
-        "xdescribe"  : false,
-        "before" : false,
-        "after"  : false,
-        "beforeEach" : false,
-        "afterEach"  : false,
-        "expect"     : false,
-        "spyOn"      : false,
-        "alert"      : false,
-        "require"      : false,
-        "requirejs"     : false,
-        "Card"        : true,
-        "iOS"       : false,
-        "$"         : true,
-        "define"    : false,
-        "angular": false,
-        "Polymer": false        
-    }
+  "esversion": 6,
+  "curly": true,
+  "eqeqeq": true,
+  "immed": true,
+  "latedef": true,
+  "noarg": true,
+  "sub": true,
+  "undef": true,
+  "boss": true,
+  "eqnull": true,
+  "node": true,
+  "browser": true,
+  "expr": true,
+  "globals": {
+    "it": false,
+    "xit": false,
+    "describe": false,
+    "xdescribe": false,
+    "before": false,
+    "after": false,
+    "beforeEach": false,
+    "afterEach": false,
+    "expect": false,
+    "spyOn": false,
+    "alert": false,
+    "require": false,
+    "requirejs": false,
+    "Card": true,
+    "iOS": false,
+    "$": true,
+    "define": false,
+    "angular": false,
+    "Polymer": false
+  }
 }