diff --git a/Cargo.toml b/Cargo.toml
index 98802f7..f357f49 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "proxmox-backup-qemu"
-version = "1.3.2"
+version = "1.4.0"
 authors = [
     "Dietmar Maurer <dietmar@proxmox.com>",
     "Dominik Csapak <d.csapak@proxmox.com>",
diff --git a/debian/changelog b/debian/changelog
index 50bc6e2..3a64591 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,6 +1,17 @@
+proxmox-backup-qemu (1.4.0) bookworm; urgency=medium
+
+  * build for Proxmox VE 8 / Debian 12 Bookworm
+
+  * update dependencies
+
+  * switch to native versioning scheme
+
+ -- Proxmox Support Team <support@proxmox.com>  Sat, 27 May 2023 13:03:17 +0200
+
 proxmox-backup-qemu (1.3.2-1) bullseye; urgency=medium
 
   * update dependencies
+
   * switch to edition 2021
 
  -- Proxmox Support Team <support@proxmox.com>  Mon, 12 Dec 2022 12:23:16 +0100
diff --git a/debian/source/format b/debian/source/format
new file mode 100644
index 0000000..89ae9db
--- /dev/null
+++ b/debian/source/format
@@ -0,0 +1 @@
+3.0 (native)