diff --git a/CHANGELOG.md b/CHANGELOG.md
index 82730071..0dcf5b17 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,9 @@ All major and minor version changes will be documented in this file. Details of
 
 ## Details
 
+### [9.42.0] - 2022-07-08
+- Added 'LS47 Encrypt' and 'LS47 Decrypt' operations [@n1073645] | [#951]
+
 ### [9.41.0] - 2022-07-08
 - Added 'Caesar Box Cipher' operation [@n1073645] | [#1066]
 
@@ -300,6 +303,7 @@ All major and minor version changes will be documented in this file. Details of
 
 
 
+[9.42.0]: https://github.com/gchq/CyberChef/releases/tag/v9.42.0
 [9.41.0]: https://github.com/gchq/CyberChef/releases/tag/v9.41.0
 [9.40.0]: https://github.com/gchq/CyberChef/releases/tag/v9.40.0
 [9.39.0]: https://github.com/gchq/CyberChef/releases/tag/v9.39.0
@@ -504,6 +508,7 @@ All major and minor version changes will be documented in this file. Details of
 [#917]: https://github.com/gchq/CyberChef/pull/917
 [#934]: https://github.com/gchq/CyberChef/pull/934
 [#948]: https://github.com/gchq/CyberChef/pull/948
+[#951]: https://github.com/gchq/CyberChef/pull/951
 [#952]: https://github.com/gchq/CyberChef/pull/952
 [#965]: https://github.com/gchq/CyberChef/pull/965
 [#966]: https://github.com/gchq/CyberChef/pull/966