diff --git a/CHANGELOG.md b/CHANGELOG.md
index b15c4f12..52d52e98 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,10 +17,16 @@ change warranting a new major release:
 
 # [unreleased]
 
+# [v1.23.1] 2023-02-02
+
+TMTC rev: 15adb9bf2ec68304a4f87b8dd418c1a8353283a3
+
 ## Fixed
 
 - Bugfix in FSFW where the sequence flags of the PUS packets were set to continuation segment (0b00)
   instead of unsegmented (0b11).
+- Bugfix in FSFW where the MGM RM3100 value Z axis data was parse incorrectly.
+  PR: https://egit.irs.uni-stuttgart.de/eive/fsfw/pulls/123
 
 # [v1.23.0] 2023-02-01
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 55f4afe4..e9c51a6a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,7 +11,7 @@ cmake_minimum_required(VERSION 3.13)
 
 set(OBSW_VERSION_MAJOR_IF_GIT_FAILS 1)
 set(OBSW_VERSION_MINOR_IF_GIT_FAILS 23)
-set(OBSW_VERSION_REVISION_IF_GIT_FAILS 0)
+set(OBSW_VERSION_REVISION_IF_GIT_FAILS 1)
 
 # set(CMAKE_VERBOSE TRUE)
 
diff --git a/fsfw b/fsfw
index f2461cd7..3250bbf2 160000
--- a/fsfw
+++ b/fsfw
@@ -1 +1 @@
-Subproject commit f2461cd7e9df449e9ea4a842ca820d5002ef6494
+Subproject commit 3250bbf269b3326683222bb87ce7faecae63ad97
diff --git a/tmtc b/tmtc
index b4e42280..15adb9bf 160000
--- a/tmtc
+++ b/tmtc
@@ -1 +1 @@
-Subproject commit b4e4228040e5b77169fdd92c5577d6f58d318275
+Subproject commit 15adb9bf2ec68304a4f87b8dd418c1a8353283a3