diff --git a/CHANGES.md b/CHANGES.md
index 5752871d4..1227825c9 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -8,6 +8,7 @@
 * fixed saving issues with checkboxes
 * added one day dismissal of admin notices using [persist-admin-notices-dismissal library](https://github.com/collizo4sky/persist-admin-notices-dismissal)
 * Settings page now uses same function to update settings for both single/multisite
+* fixed `class Rest_Update` to avoid potential race conditions when RESTful endpoint is used as a webhook
 
 #### 5.5.0 / 2016-07-02
 * better internationalization for changing plugin _View details_ link
diff --git a/README.md b/README.md
index 451f31c55..dc96d1de1 100644
--- a/README.md
+++ b/README.md
@@ -323,7 +323,7 @@ And our plugin is updated! The messages displayed are those that otherwise would
 
 When using the RESTful endpoints for updating themes or plugins, you need to specify at least the `key` attribute, as well as one of the attributes `plugin`, `theme`, or `updates`. All other attributes are optional.
 
-The RESTful api is useful, among other things, for automatically updating themes and plugins on events sent as Webhooks from GitHub and the other services supported by this plugin. Some special functionality has been implemented to support this in order avoid race conditions, i.e. to make sure that the updated version is really the version that was just pushed to the repository. Specifically, GitHub Updater checks the headers to see if the incoming request is from a 
+The RESTful endpoints are useful for automatically updating themes and plugins on events sent as webhooks from GitHub and the other services supported by this plugin. Some special functionality has been implemented to support this in order avoid race conditions, i.e. to make sure that the updated version is really the version that was just pushed to the repository. Specifically, GitHub Updater checks the headers to see if the incoming request is from a 
 [GitHub Webhook](https://developer.github.com/v3/activity/events/types/#pushevent), a [Bitbucket Webhook](https://confluence.atlassian.com/bitbucket/event-payloads-740262817.html#EventPayloads-Push) or a [GitLab Webhook](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/web_hooks/web_hooks.md#push-events). If this is the case, and if the branch that was pushed to matches the branch specified in the `tag` attribute, then the update will be made according to the latest commit specified in the event.
 
 ## Extended Naming