diff --git a/Makefile b/Makefile
index f682760..38a24d2 100644
--- a/Makefile
+++ b/Makefile
@@ -6,9 +6,9 @@ KERNEL_MIN=2
 KERNEL_PATCHLEVEL=16
 # increment KREL if the ABI changes (abicheck target in debian/rules)
 # rebuild packages with new KREL and run 'make abiupdate'
-KREL=4
+KREL=4-bpo11
 
-PKGREL=4
+PKGREL=4~bpo11+1
 
 KERNEL_MAJMIN=$(KERNEL_MAJ).$(KERNEL_MIN)
 KERNEL_VER=$(KERNEL_MAJMIN).$(KERNEL_PATCHLEVEL)
diff --git a/debian/changelog b/debian/changelog
index f72ea4c..31e558c 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+pve-kernel (6.2.16-4~bpo11+1) bullseye; urgency=medium
+
+  * Rebuild for bullseye but keep ZFS at 2.1.11 for now.
+
+  * bump ABI to 6.2.16-4~bpo11
+
+ -- Proxmox Support Team <support@proxmox.com>  Fri, 07 Jul 2023 17:05:59 +0200
+
 pve-kernel (6.2.16-4) bookworm; urgency=medium
 
   * backport fixes for StackRot (CVE-2023-3269)