CHANGELOG.md in uglifier-4.2.0 vs CHANGELOG.md in uglifier-4.2.1

@@ -1,4 +1,9 @@
+## 4.2.1 (22 September 2024)
+
+- fix Ruby 3.4 compatiblity, drop Ruby 2.3 and older support (#195)
+- fix typos (#194)
+
 ## 4.2.0 (25 September 2019)
 
 - show code context for error messages (#167)
 - defer initialisation of ExecJS context to fix #165