CHANGELOG.md in sec_id-4.0.0 vs CHANGELOG.md in sec_id-4.1.0

@@ -1,6 +1,19 @@
 # Changelog
 
+## [4.1.0] - 2024-09-23
+
+### Added
+
+- FIGI support ([@wtn][], #84)
+- CIK support ([@wtn][], #85)
+- Convert between CUSIPs and ISINs ([@wtn][], #86, #88)
+- CINS check method for CUSIPs ([@wtn][], #87)
+
+### Updated
+
+- Small internal refactorings
+
 ## [4.0.0] - 2024-07-09
 
 ### Breaking changes
 
 - Minimum required Ruby version is 3.1 now