diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6e75e141..638861cf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,9 +15,9 @@ change warranting a new major release:
 - The behavour of the OBSW changes in a major shape or form relevant
   for operations
 
-# [unreleased]
+# [v1.23.0] 2023-02-01
 
-TMTCversion: v2.8.0
+TMTC version: v2.9.0
 
 ## Changed
 
diff --git a/fsfw b/fsfw
index bd586f65..d9d253d3 160000
--- a/fsfw
+++ b/fsfw
@@ -1 +1 @@
-Subproject commit bd586f6564b3c70a9688a87467639b5ed41e920a
+Subproject commit d9d253d3bbca2707dc271783b9b76a1379522c1f
diff --git a/tmtc b/tmtc
index e4ec0689..bf16fa14 160000
--- a/tmtc
+++ b/tmtc
@@ -1 +1 @@
-Subproject commit e4ec0689b567db408e4c38dd74ba516975e13eb4
+Subproject commit bf16fa14ade0498547960a98eb1d2195ac42742a