diff --git a/assets/js/app.js b/assets/js/app.js
index 52c231bf..1d340ca8 100644
--- a/assets/js/app.js
+++ b/assets/js/app.js
@@ -11,6 +11,7 @@ import './vendor/fetch.polyfill';
 import './vendor/closest.polyfill';
 import './vendor/customevent.polyfill';
 import './vendor/es6.polyfill';
+import './vendor/values-entries.polyfill';
 
 // Our code
 import './ujs';
diff --git a/assets/js/vendor/values-entries.polyfill.js b/assets/js/vendor/values-entries.polyfill.js
new file mode 100644
index 00000000..6ff2a000
--- /dev/null
+++ b/assets/js/vendor/values-entries.polyfill.js
@@ -0,0 +1,13 @@
+// object-values | MIT | github.com/tc39/proposal-object-values-entries
+
+if (!Object.values) {
+  Object.values = function values(O) {
+    return reduce(keys(O), (v, k) => concat(v, typeof k === 'string' && isEnumerable(O, k) ? [O[k]] : []), []);
+  };
+}
+
+if (!Object.entries) {
+  Object.entries = function entries(O) {
+    return reduce(keys(O), (e, k) => concat(e, typeof k === 'string' && isEnumerable(O, k) ? [[k, O[k]]] : []), []);
+  };
+}