diff --git a/Makefile b/Makefile
index 051ff64..3e5277e 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ RELEASE=5.1
 KERNEL_VER=4.15.17
 KREL=1
 
-PKGREL=7
+PKGREL=8
 
 EXTRAVERSION=-${KREL}-pve
 KVNAME=${KERNEL_VER}${EXTRAVERSION}
diff --git a/debian/changelog b/debian/changelog
index 66a9e4c..1122992 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+pve-kernel (4.15.17-8) unstable; urgency=medium
+
+  * update ZFS to 0.7.8-pve1
+
+  * update sources to Ubuntu-4.15.0-20.21
+
+ -- Proxmox Support Team <support@proxmox.com>  Thu, 03 May 2018 08:43:38 +0200
+
 pve-kernel (4.15.17-7) unstable; urgency=medium
 
   * update sources to Ubuntu-4.15.0-17.18