diff --git a/Makefile b/Makefile
index f450a573..139d4ef6 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ RELEASE=4.1
 
 VERSION=4.0
 PACKAGE=qemu-server
-PKGREL=50
+PKGREL=51
 
 CFLAGS= -O2 -Werror -Wall -Wtype-limits -Wl,-z,relro 
 
diff --git a/changelog.Debian b/changelog.Debian
index 3cbdc50f..7d29f565 100644
--- a/changelog.Debian
+++ b/changelog.Debian
@@ -1,3 +1,11 @@
+qemu-server (4.0-51) unstable; urgency=medium
+
+  * Fix #878: disk-size format
+
+  *  Fix #879: exclusion of disk for backup
+
+ -- Proxmox Support Team <support@proxmox.com>  Fri, 29 Jan 2016 10:04:41 +0100
+
 qemu-server (4.0-50) unstable; urgency=medium
 
   * add hidden option to cpu type