diff --git a/Firefox-WebExtensions.md b/Firefox-WebExtensions.md
index d1adec7..36a35c6 100644
--- a/Firefox-WebExtensions.md
+++ b/Firefox-WebExtensions.md
@@ -1,6 +1,6 @@
 This page may update often until there is a stable release of uBO/webext.
 
-| Tentative schedule | July 19 | August 10 | August 22 | September 19 | November 14 |
+| Tentative schedule | July 19 | Aug. 10 | Aug. 22 | Sep. 19 | Nov. 14 |
 | ----- |:-----:|:-----:|:-----:|:-----:|:-----:|
 | Firefox stable is...  | Firefox 54 | Firefox 55 |        |         | [Firefox 57](https://blog.mozilla.org/addons/2017/02/16/the-road-to-firefox-57-compatibility-milestones/) |
 | AMO dev channel | [uBO/webext<br>hybrid](https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/versions/beta?page=1#version-1.13.9b7) | [uBO/webext](https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/versions/beta) |       |       |       |