diff --git a/Makefile b/Makefile
index da218f6..8ae8208 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ RELEASE=5.1
 
 # also update proxmox-ve/changelog if you change KERNEL_VER or KREL
 KERNEL_VER=4.13.13
-PKGREL=32
+PKGREL=33
 # also include firmware of previous version into
 # the fw package:  fwlist-2.6.32-PREV-pve
 KREL=2
diff --git a/changelog.Debian b/changelog.Debian
index 07b80c3..e36bf0a 100644
--- a/changelog.Debian
+++ b/changelog.Debian
@@ -1,3 +1,11 @@
+pve-kernel (4.13.13-33) unstable; urgency=medium
+
+  * update to Ubuntu-4.13.0-22.25
+
+  * fix #1537: cherry-pick AMD NPT / IOMMU fix
+
+ -- Proxmox Support Team <support@proxmox.com>  Tue, 2 Jan 2018 10:03:58 +0100
+
 pve-kernel (4.13.13-32) unstable; urgency=medium
 
   * update to Ubuntu-4.13.0-21.24