diff --git a/lib/mediumClient.js b/lib/mediumClient.js
index 6adda8d..9ee7844 100644
--- a/lib/mediumClient.js
+++ b/lib/mediumClient.js
@@ -232,6 +232,7 @@ MediumClient.prototype.getContributorsForPublication = function (options, callba
  *  tags: Array.<string>,
  *  canonicalUrl: string,
  *  publishStatus: PostPublishStatus,
+ *  publishedAt: PostPublishedAt
  *  license: PostLicense
  * }} options
  * @param {NodeCallback} callback
@@ -248,6 +249,7 @@ MediumClient.prototype.createPost = function (options, callback) {
       tags: options.tags,
       canonicalUrl: options.canonicalUrl,
       publishStatus: options.publishStatus,
+      publishedAt: options.publishedAt,
       license: options.license
     }
   }, callback)