diff --git a/Changelog b/Changelog
index c09af91..0ced995 100644
--- a/Changelog
+++ b/Changelog
@@ -1,3 +1,11 @@
+2023-12-09:
+
+- added Object.hasOwn, {String|Array|TypedArray}.prototype.at,
+  {Array|TypedArray}.prototype.findLast{Index}
+- BigInt support is enabled even if CONFIG_BIGNUM disabled
+- updated to Unicode 15.0.0
+- misc bug fixes
+
 2021-03-27:
 
 - faster Array.prototype.push and Array.prototype.unshift
diff --git a/VERSION b/VERSION
index 22ffec1..08d1222 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2021-03-27
+2023-12-09