diff --git a/CHANGELOG.md b/CHANGELOG.md
index 463a21bd..af8693f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,8 +36,18 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Complete refactoring of HK subsystem. Replaced local data pool manager by periodic HK
   helper. The shared pool and the periodic HK generation are now distinct concepts.
-  The [FSFW PR](https://egit.irs.uni-stuttgart.de/KSat/fsfw/pulls/37) contains more
-  information.
+- The local HK manager was replaced by a periodic HK helper which has reduced responsibilities.
+  It takes care of tracking the HK generation using a set specification provided by the user.n
+  However, it leaves serialization of the HK data completely to the developer. This removes a major
+  constraint on the format of the HK data, which was previously constrained to implementors of a
+  certain base class.
+- The former set classes and pool objects are still available for HK set specification and
+  generation. The API has changed, but the general usage and their architecture has not.
+- A new set of set classes and helper objects to specify HK sets and data which does not need to be
+  shared was added as well. The majority of datasets do not need to be shared anyway.
+- The non-shared API retain the capability of appending of a validity blob for each piece of set
+  data at the end of the HK data. For both non-shared and shared data, this capability can be
+  specified in the constructor, and defaults to true.
 - Improved File System Abstraction to be more in line with normal filesystems.
 - CFDP implementation was improved, has now even less dependencies on other FSFW components
   and allows one inserted packet per state machine call.