diff --git a/CHANGES.markdown b/CHANGES.markdown
index cc8a94edf..88e1fddc0 100644
--- a/CHANGES.markdown
+++ b/CHANGES.markdown
@@ -13,6 +13,17 @@ happens, so I'm now setting it to a slightly arbitrary time early in the morning
 * Additional methods for calculating IBU
 * We'll list other new features here...
 
+## v4.0.9
+Bug fixes and minor enhancements.
+
+### New Features
+* None
+
+### Bug Fixes
+* None
+### Release Timestamp
+Sat, 26 Oct 2024 04:00:09 +0100
+
 ## v4.0.8
 Bug fixes and minor enhancements.
 
@@ -25,7 +36,7 @@ Bug fixes and minor enhancements.
 * Missing libb2-1.dll [863](https://github.com/Brewtarget/brewtarget/issues/863)
 
 ### Release Timestamp
-Tue, 16 Oct 2024 04:00:08 +0100
+Sat, 26 Oct 2024 04:00:08 +0100
 
 ## v4.0.7
 Bug fixes and minor enhancements.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 847f496d4..fc3bbe36d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -115,7 +115,7 @@ endif()
 #=======================================================================================================================
 # It's simplest to keep the project name all lower-case as it means we can use a lot more of the default settings for
 # Linux packaging (where directory names etc are expected to be all lower-case).
-project(brewtarget VERSION 4.0.8 LANGUAGES CXX)
+project(brewtarget VERSION 4.0.9 LANGUAGES CXX)
 message(STATUS "Building ${PROJECT_NAME} version ${PROJECT_VERSION}")
 message(STATUS "PROJECT_SOURCE_DIR is ${PROJECT_SOURCE_DIR}")
 # Sometimes we do need the capitalised version of the project name
diff --git a/meson.build b/meson.build
index 73bc023c9..1b02edc39 100644
--- a/meson.build
+++ b/meson.build
@@ -189,7 +189,7 @@
 #
 #
 project('brewtarget', 'cpp',
-        version: '4.0.8',
+        version: '4.0.9',
         license: 'GPL-3.0-or-later',
         meson_version: '>=0.63.0',
         default_options : ['cpp_std=c++20',