diff --git a/Makefile b/Makefile
index 2aec080..2b0dc18 100644
--- a/Makefile
+++ b/Makefile
@@ -1,12 +1,12 @@
 # also bump pve-kernel-meta if either of MAJ.MIN, PATCHLEVEL or KREL change
 KERNEL_MAJ=5
 KERNEL_MIN=15
-KERNEL_PATCHLEVEL=19
+KERNEL_PATCHLEVEL=27
 # increment KREL if the ABI changes (abicheck target in debian/rules)
 # rebuild packages with new KREL and run 'make abiupdate'
-KREL=2
+KREL=1
 
-PKGREL=3
+PKGREL=1
 
 KERNEL_MAJMIN=$(KERNEL_MAJ).$(KERNEL_MIN)
 KERNEL_VER=$(KERNEL_MAJMIN).$(KERNEL_PATCHLEVEL)
diff --git a/debian/changelog b/debian/changelog
index 4143b5f..af4e4a0 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+pve-kernel (5.15.27-1) bullseye; urgency=medium
+
+  * update sources to Ubuntu-5.15.0-23.23 based on 5.15.27
+
+  * update ZFS to 2.1.2
+
+ -- Proxmox Support Team <support@proxmox.com>  Sat, 12 Mar 2022 15:16:17 +0100
+
 pve-kernel (5.15.19-3) bullseye; urgency=medium
 
   * backport "lib/iov_iter: initialize "flags" in new pipe_buffer"