diff --git a/CHANGELOG.md b/CHANGELOG.md
index a642b68..dfeeb52 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # CHANGELOG
 
+## 1.6.0
+
+- MailGun API now uses the `v3` endpoint. Normally, [this is BC-free](http://blog.mailgun.com/default-api-version-now-v3/), but if you are using
+MailGun, make sure to try your application before!
+
 ## 1.5.3
 
 - Add the new `merge_language` option to Mandrill service.
diff --git a/README.md b/README.md
index 9d30b7a..bc2a6df 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ file called `composer.json` and save it in the root of your project:
 ```
 {
     "require": {
-        "slm/mail": "~1.5"
+        "slm/mail": "~1.6"
     }
 }
 ```