diff --git a/CHANGELOG.md b/CHANGELOG.md
index 837df1a..2d833d4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@ Follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) · versioned wi
## [Unreleased]
### Changed
+- **Release cache-busting.** Updated the HTML app-version, stylesheet URL, and loader URL to match `VERSION`
+ (`1.24.21`) so deployed browsers fetch the current core assets.
- **Lazy-navigation race protection.** A restored-section callback can no longer replace a newer user navigation
request while section-specific modules are still loading, including under CPU throttling.
- **Constrained workload coverage.** Added a 4× CPU-throttled 500-character browser workload regression that
diff --git a/VERSION b/VERSION
index 47e937a..e88b24c 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.24.20
+1.24.21
diff --git a/static/index.html b/static/index.html
index 8e440e0..88a88d7 100644
--- a/static/index.html
+++ b/static/index.html
@@ -10,7 +10,7 @@
-
+
@@ -27,7 +27,7 @@
-
+
@@ -392,7 +392,7 @@ window.toggleNavTree = function(treeId, chevronId) {
-
+