diff --git a/README.md b/README.md
index 7e10396f..646db3ee 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ Has a REST API.
 
 # Requirements
 Accounts to one of the supported bridges
-* [Mattermost](https://github.com/mattermost/platform/) 3.8.x - 3.10.x, 4.0.x - 4.2.x
+* [Mattermost](https://github.com/mattermost/platform/) 3.8.x - 3.10.x, 4.x
 * [IRC](http://www.mirc.com/servers.html)
 * [XMPP](https://jabber.org)
 * [Gitter](https://gitter.im)
@@ -54,7 +54,7 @@ See https://github.com/42wim/matterbridge/wiki
 
 # Installing
 ## Binaries
-* Latest stable release [v1.3.0](https://github.com/42wim/matterbridge/releases/latest)
+* Latest stable release [v1.3.1](https://github.com/42wim/matterbridge/releases/latest)
 * Development releases (follows master) can be downloaded [here](https://dl.bintray.com/42wim/nightly/)  
 
 ## Building
diff --git a/changelog.md b/changelog.md
index 52e457f2..02699d08 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,9 @@
+# v1.3.1
+## New features
+* Support mattermost 4.3.0 and every other 4.x as api4 should be stable (mattermost)
+## Bugfix
+* Use bot username if specified (slack). Closes #273
+
 # v1.3.0
 ## New features
 * Relay slack_attachments from mattermost to slack (slack). Closes #260
diff --git a/matterbridge.go b/matterbridge.go
index aa1cebd7..3d07f050 100644
--- a/matterbridge.go
+++ b/matterbridge.go
@@ -11,7 +11,7 @@ import (
 )
 
 var (
-	version = "1.4.0-dev"
+	version = "1.3.1"
 	githash string
 )