diff --git a/CHANGELOG.md b/CHANGELOG.md
index 660e0ef..14b2654 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## next
+## 4.2.1 (22 September 2024)
 
 - fix Ruby 3.4 compatiblity, drop Ruby 2.3 and older support (#195)
 - fix typos (#194)
diff --git a/lib/uglifier/version.rb b/lib/uglifier/version.rb
index 2758dc2..825c9da 100644
--- a/lib/uglifier/version.rb
+++ b/lib/uglifier/version.rb
@@ -1,4 +1,4 @@
 class Uglifier
   # Current version of Uglifier.
-  VERSION = "4.2.0"
+  VERSION = "4.2.1"
 end