diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7b68c46..81cbee4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## Unreleased
+## [v0.4.0] 2022-04-30
 ### Added
 - Experimental support for Ox (OpenPGP for XMPP) encryption.
 
diff --git a/const.go b/const.go
index 2a8e518..b704ec1 100644
--- a/const.go
+++ b/const.go
@@ -5,7 +5,7 @@
 package main
 
 const (
-	version          = "0.4.0-devel"
+	version          = "0.4.0"
 	nsDiscoInfo      = "http://jabber.org/protocol/disco#info"
 	nsEme            = "urn:xmpp:eme:0"
 	nsHints          = "urn:xmpp:hints"