diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 4e40d20b61..27c4474243 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,6 +1,13 @@
 Antares Changelog
 =================
 
+
+v8.4.4 (09/2023)
+--------------------
+## Bugfix
+* Fix duplicate TS numbers for thermal clusters (#1090) -- backport from 8.5.x
+
+
 v8.4.3 (08/2023)
 --------------------
 ## Features
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ec664949bd..4668df3680 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -3,8 +3,8 @@ cmake_minimum_required(VERSION 3.14) # FetchContent_MakeAvailable
 # Version
 set(ANTARES_VERSION_HI	      8)
 set(ANTARES_VERSION_LO	      4)
-set(ANTARES_VERSION_REVISION  3)
-set(ANTARES_VERSION_YEAR      2022)
+set(ANTARES_VERSION_REVISION  4)
+set(ANTARES_VERSION_YEAR      2023)
 
 project(antares
         VERSION ${ANTARES_VERSION_HI}.${ANTARES_VERSION_LO}.${ANTARES_VERSION_REVISION})