diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d11cac9..3b85408c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,14 @@ change warranting a new major release:
 
 # [unreleased]
 
+## Added
+
+- First version of a TCS controller heater control loop.
+
+## Changed
+
+- Reworked dummy handling for the TCS controller.
+
 # [v1.26.2] 2023-02-08
 
 ## Changed