diff --git a/lib/recurly/event.js b/lib/recurly/event.js
index 83d79c3a7..6b31612fc 100644
--- a/lib/recurly/event.js
+++ b/lib/recurly/event.js
@@ -28,5 +28,6 @@ export class EventDispatcher {
  * @param {String} options.name event name
  */
 function payload ({ name }) {
-  return { name };
+  const initiatedAt = new Date().toISOString();
+  return { name, initiatedAt };
 }
diff --git a/test/support/helpers.js b/test/support/helpers.js
index 304c17a0e..30d7d8c50 100644
--- a/test/support/helpers.js
+++ b/test/support/helpers.js
@@ -59,8 +59,3 @@ export function isUuidv4 (example) {
   const matcher = /^[0-9A-F]{8}-[0-9A-F]{4}-4[0-9A-F]{3}-[89AB][0-9A-F]{3}-[0-9A-F]{12}$/i;
   return matcher.test(example);
 }
-
-export function isUuidv4 (example) {
-  const matcher = /^[0-9A-F]{8}-[0-9A-F]{4}-4[0-9A-F]{3}-[89AB][0-9A-F]{3}-[0-9A-F]{12}$/i;
-  return matcher.test(example);
-}