diff --git a/Makefile b/Makefile
index fd96adf..f8b790e 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=40
+PKGREL=41
 # also include firmware of previous version into
 # the fw package:  fwlist-2.6.32-PREV-pve
 KREL=6
diff --git a/changelog.Debian b/changelog.Debian
index e14d671..ee32977 100644
--- a/changelog.Debian
+++ b/changelog.Debian
@@ -1,3 +1,11 @@
+pve-kernel (4.13.13-41) unstable; urgency=medium
+
+  * fix refcnt leaks with net namespaces
+
+  * update ZFS/SPL to 0.7.6
+
+ -- Proxmox Support Team <support@proxmox.com>  Wed, 21 Feb 2018 10:07:54 +0100
+
 pve-kernel (4.13.13-40) unstable; urgency=medium
 
   * warn when loading non-RETPOLINE modules