diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6e155c4dc..c1f38daf6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file. For info on
 
 ## Unreleased
 
-### Changed
+## [3.0.9] - 2024-01-31
 
 - Fix incorrect content-length header that was emitted when `Rack::Response#write` was used in some situations. ([#2150](https://github.com/rack/rack/pull/2150), [@mattbrictson])
 
diff --git a/lib/rack/version.rb b/lib/rack/version.rb
index e634f23ae..e2deadab2 100644
--- a/lib/rack/version.rb
+++ b/lib/rack/version.rb
@@ -25,7 +25,7 @@ def self.version
     VERSION
   end
 
-  RELEASE = "3.0.8"
+  RELEASE = "3.0.9"
 
   # Return the Rack release as a dotted string.
   def self.release