diff --git a/CHANGELOG.md b/CHANGELOG.md
index c510ce2c..508e35a0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release Notes for Blitz
 
-## 4.21.0 - Unreleased
+## 4.21.0 - 2024-07-24
 
 ### Added
 
diff --git a/composer.json b/composer.json
index 053b91ae..37a51f89 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
   "name": "putyourlightson/craft-blitz",
   "description": "Intelligent static page caching for creating lightning-fast sites.",
-  "version": "4.20.0",
+  "version": "4.21.0",
   "type": "craft-plugin",
   "homepage": "https://putyourlightson.com/plugins/blitz",
   "license": "proprietary",