diff --git a/CHANGELOG.md b/CHANGELOG.md
index eb7b9f80..3f530c69 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 All major and minor version changes will be documented in this file. Details of patch-level version changes can be found in [commit messages](https://github.com/gchq/CyberChef/commits/master).
 
 
+### [8.33.0] - 2019-06-27
+- 'Bzip2 Compress' operation added and 'Bzip2 Decompress' operation greatly improved [@artemisbot] | [#531]
+
 ### [8.32.0] - 2019-06-27
 - 'Indec of Coincidence' operation added [@Ge0rg3] | [#571]
 
@@ -133,6 +136,7 @@ All major and minor version changes will be documented in this file. Details of
 
 
 
+[8.33.0]: https://github.com/gchq/CyberChef/releases/tag/v8.33.0
 [8.32.0]: https://github.com/gchq/CyberChef/releases/tag/v8.32.0
 [8.31.0]: https://github.com/gchq/CyberChef/releases/tag/v8.31.0
 [8.30.0]: https://github.com/gchq/CyberChef/releases/tag/v8.30.0
@@ -236,5 +240,6 @@ All major and minor version changes will be documented in this file. Details of
 [#506]: https://github.com/gchq/CyberChef/pull/506
 [#516]: https://github.com/gchq/CyberChef/pull/516
 [#525]: https://github.com/gchq/CyberChef/pull/525
+[#531]: https://github.com/gchq/CyberChef/pull/531
 [#533]: https://github.com/gchq/CyberChef/pull/533
 [#571]: https://github.com/gchq/CyberChef/pull/571