diff --git a/builder/combined.json.pkr.hcl b/builder/combined.json.pkr.hcl
index 96d196e1..c9ce1bd6 100644
--- a/builder/combined.json.pkr.hcl
+++ b/builder/combined.json.pkr.hcl
@@ -22,6 +22,7 @@ source "arm-image" "rpi64-pwnagotchi" {
   output_filename = "../../../pwnagotchi-64bit.img"
   qemu_binary     = "qemu-aarch64-static"
   target_image_size =  9969908736
+  last_partition_extra_size = 9221225472
 }
 
 source "arm-image" "rpi32-pwnagotchi" {
@@ -33,6 +34,7 @@ source "arm-image" "rpi32-pwnagotchi" {
   qemu_args       = ["-cpu", "arm1176"]
   image_arch      = "arm"
   target_image_size = 9969908736
+  last_partition_extra_size = 9221225472
 }
 
 # a build block invokes sources and runs provisioning steps on them. The
diff --git a/builder/raspberrypi64.json.pkr.hcl b/builder/raspberrypi64.json.pkr.hcl
index 87bec510..de17dd71 100644
--- a/builder/raspberrypi64.json.pkr.hcl
+++ b/builder/raspberrypi64.json.pkr.hcl
@@ -22,6 +22,7 @@ source "arm-image" "rpi64-pwnagotchi" {
   output_filename = "../../../pwnagotchi-64bit.img"
   qemu_binary     = "qemu-aarch64-static"
   target_image_size = 9969908736
+  last_partition_extra_size = 9221225472
 }
 
 # a build block invokes sources and runs provisioning steps on them. The