diff --git a/CMakeLists.txt b/CMakeLists.txt
index 50d2e569..5ee571ce 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.15)
 
-project(btrfs VERSION 1.8.2)
+project(btrfs VERSION 1.9.0)
 
 option(WITH_TEST "Compile test program" ON)
 
diff --git a/README.md b/README.md
index efc8c747..30a1544a 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
-WinBtrfs v1.8.2
----------------
+WinBtrfs v1.9
+-------------
 
 WinBtrfs is a Windows driver for the next-generation Linux filesystem Btrfs.
 A reimplementation from scratch, it contains no code from the Linux kernel,
@@ -79,6 +79,7 @@ Features
 * Metadata UUID incompat flag (Linux 5.0)
 * Three- and four-disk RAID1 (Linux 5.5)
 * New checksum types (xxhash, sha256, blake2) (Linux 5.5)
+* Block group tree (Linux 6.1)
 
 Todo
 ----
@@ -292,6 +293,13 @@ partition type from 83 to 7.
 Changelog
 ---------
 
+v1.9 (2024-03-15):
+* Added support for block group tree (Linux 6.1)
+* Fixed hang when system under heavy load
+* Added /blockgrouptree and /freespacetree options to mkbtrfs
+* Follow Linux in defaulting /noholes to on in mkbtrfs
+* Added support for CRC32C instructions on aarch64
+
 v1.8.2 (2023-01-10):
 * Fixed UAC not working
 * Fixed Smartlocker crash on Windows 11 22H2
diff --git a/src/btrfs-vol.inf b/src/btrfs-vol.inf
index 430071c8..c17e4f97 100644
--- a/src/btrfs-vol.inf
+++ b/src/btrfs-vol.inf
@@ -2,7 +2,7 @@
 ;;; WinBtrfs
 ;;;
 ;;;
-;;; Copyright (c) 2016-23 Mark Harmstone
+;;; Copyright (c) 2016-24 Mark Harmstone
 ;;;
 
 [Version]
@@ -10,7 +10,7 @@ Signature   = "$Windows NT$"
 Class       = Volume
 ClassGuid   = {71a27cdd-812a-11d0-bec7-08002be2092f}
 Provider    = %Me%
-DriverVer   = 01/10/2023,1.8.2.0
+DriverVer   = 03/15/2024,1.9.0.0
 CatalogFile = btrfs.cat
 PnpLockdown = 1
 
diff --git a/src/btrfs.inf b/src/btrfs.inf
index 185baf3e..0b06a2cd 100755
--- a/src/btrfs.inf
+++ b/src/btrfs.inf
@@ -2,7 +2,7 @@
 ;;; WinBtrfs
 ;;;
 ;;;
-;;; Copyright (c) 2016-23 Mark Harmstone
+;;; Copyright (c) 2016-24 Mark Harmstone
 ;;;
 
 [Version]
@@ -10,7 +10,7 @@ Signature   = "$Windows NT$"
 Class       = Volume
 ClassGuid   = {71a27cdd-812a-11d0-bec7-08002be2092f}
 Provider    = %Me%
-DriverVer   = 01/10/2023,1.8.2.0
+DriverVer   = 03/15/2024,1.9.0.0
 CatalogFile = btrfs.cat
 
 [DestinationDirs]