diff --git a/CMakeLists.txt b/CMakeLists.txt
index 52764927f1a41bf21bcd63b471c490ca78d696d2..1fa6e0093353b55f8e320440a3024ce211cc1acc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@
 ###############################################################################
 cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
 
-project(Detector VERSION 1.5)
+project(Detector VERSION 1.5.1)
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS "ON")
 add_definitions(${GCC_COVERAGE_COMPILE_FLAGS})
diff --git a/ReleaseNotes/v1r5p1.md b/ReleaseNotes/v1r5p1.md
new file mode 100644
index 0000000000000000000000000000000000000000..26675c53fb2b676bbaaa755866f02eb767b9b318
--- /dev/null
+++ b/ReleaseNotes/v1r5p1.md
@@ -0,0 +1,9 @@
+2022-11-10 Detector v1r5p1
+===
+
+This version uses LCG [101a](http://lcginfo.cern.ch/release/101a_LHCB_7/) with ROOT 6.24.08.
+
+This version is released on `master` branch.
+Built relative to Detector [v1r5](/../../tags/v1r5), with the following changes:
+
+- ~Core | MagneticFieldExtension - Prefer return values to INOUT arguments, !311 (@jonrob)