diff --git a/CHANGELOG.md b/CHANGELOG.md
index ed38908..19c2a6d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,6 +28,7 @@ All notable changes to this project will be documented in this file.
 - Ensure all OpenCL kernels are present in destructor.
 - Unified run function in driver code to reduce code duplication, output should be uneffected.
 - Normalise sum result by expected value to help false negative errors.
+- HC version deprecated and moved to a legacy directory.
 
 ### Removed
 - Pre-building of kernels in SYCL version to ensure compatibility with SYCL 1.2.1.