diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 8f26e03..db13793 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -1,7 +1,7 @@
 These are the release notes for the [mediawiki-api-base](README.md) library.
 
-## Version 2.4.0 (work in progress)
-* TBA
+## Version 2.3.1 (3 May 2017)
+* Don't fail on libxml errors if the RSD URL can still be found. PR [#35](https://github.com/addwiki/mediawiki-api-base/pull/35), Fixes [T163527](https://phabricator.wikimedia.org/T163527).
 
 ## Version 2.3.0 (27 April 2017)
 
diff --git a/composer.json b/composer.json
index e69bc25..2227db4 100644
--- a/composer.json
+++ b/composer.json
@@ -43,10 +43,5 @@
 		"files": [
 			"tests/Integration/TestEnvironment.php"
 		]
-	},
-	"extra": {
-		"branch-alias": {
-			"dev-master": "2.4.x-dev"
-		}
 	}
 }