diff --git a/CHANGELOG.md b/CHANGELOG.md
index 15345f3..c5b4640 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ All notable changes to **Tiger Core** (`webtigers/tiger-core`). Format follows
 
 ## [Unreleased]
 
+## [1.21.0] — 2026-10-10
+
 ### Added
 
 - **Per-module auto-update — the WordPress "Enable auto-updates" toggle.** Opt-in and OFF by default: an
diff --git a/library/Tiger/Version.php b/library/Tiger/Version.php
index 1fe94d1..811982d 100644
--- a/library/Tiger/Version.php
+++ b/library/Tiger/Version.php
@@ -9,5 +9,5 @@
 class Tiger_Version
 {
     /** Current Tiger Core version. Keep in lockstep with the git tag cut for a release. */
-    const VERSION = '1.20.1';
+    const VERSION = '1.21.0';
 }