diff --git a/CHANGELOG.md b/CHANGELOG.md
index 278705006..ba65877eb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# Version 8.21.0
+*2023-06-28*
+
+* Allow termlists_term_attribute_value submissions from websites.
 
 # Version 8.18.0
 *2023-04-27*
diff --git a/application/config/version.php b/application/config/version.php
index d0edf1fe6..1292714ba 100644
--- a/application/config/version.php
+++ b/application/config/version.php
@@ -29,14 +29,14 @@
  *
  * @var string
  */
-$config['version'] = '8.20.6';
+$config['version'] = '8.21.0';
 
 /**
  * Version release date.
  *
  * @var string
  */
-$config['release_date'] = '2023-06-22';
+$config['release_date'] = '2023-06-28';
 
 /**
  * Link to the code repository downloads page.