diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d322221..18f99dff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,13 +17,14 @@ change warranting a new major release:
 
 # [unreleased]
 
-# [v1.27.0] 2023-02-09
+# [v1.26.3] 2023-02-09
 
 eive-tmtc: v2.12.2
 
 ## Added
 
-- First version of a TCS controller heater control loop.
+- First version of a TCS controller heater control loop, but
+  the loop is disabled for now.
 
 ## Changed
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 60b4bf0b..f52bc9f3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,8 +10,8 @@
 cmake_minimum_required(VERSION 3.13)
 
 set(OBSW_VERSION_MAJOR 1)
-set(OBSW_VERSION_MINOR 27)
-set(OBSW_VERSION_REVISION 0)
+set(OBSW_VERSION_MINOR 26)
+set(OBSW_VERSION_REVISION 3)
 
 # set(CMAKE_VERBOSE TRUE)