@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2025-2026, by Samuel Williams.
+# Copyright, 2026, by Samuel Williams.
 
 # Update copyrights and project documentation for the new version.
 #
 
@@ -7,6 +7,6 @@
 module Protocol
 	# @namespace
 	module WebSocket
-		VERSION = "0.21.2"
+		VERSION = "0.21.3"
 	end
 end
@@ -16,7 +16,7 @@ Please see the [project documentation](https://socketry.github.io/protocol-webso
 
 Please see the [project releases](https://socketry.github.io/protocol-websocket/releases/index) for all releases.
 
-### Unreleased
+### v0.21.3
 
   - Adopt reviewed GitHub release pull requests, RubyGems Trusted Publishing, and release attestations instead of legacy certificate signing.
 
 
@@ -1,6 +1,6 @@
 # Releases
 
-## Unreleased
+## v0.21.3
 
   - Adopt reviewed GitHub release pull requests, RubyGems Trusted Publishing, and release attestations instead of legacy certificate signing.
Original file line number	Diff line number	Diff line change
`@@ -1,7 +1,7 @@`
`1`	`1`	`# frozen_string_literal: true`
`2`	`2`
`3`	`3`	`# Released under the MIT License.`
`4`		`-# Copyright, 2025-2026, by Samuel Williams.`
	`4`	`+# Copyright, 2026, by Samuel Williams.`
`5`	`5`
`6`	`6`	`# Update copyrights and project documentation for the new version.`
`7`	`7`	`#`