diff --git a/builder/build-image.sh b/builder/build-image.sh
index 7244424..4a36770 100755
--- a/builder/build-image.sh
+++ b/builder/build-image.sh
@@ -29,15 +29,21 @@ packer plugins install github.com/hashicorp/ansible
 
 # do the build
 if tools/build.sh "$IMAGE" >/var/log/image-build.log 2>&1; then
-	builder/refresh.sh vo.access.egi.eu "$(cat /var/tmp/egi/.refresh_token)" images
-	OS_TOKEN="$(yq -r '.clouds.images.auth.token' /etc/openstack/clouds.yaml)"
+	# compress the resulting image
 	VM_NAME="$(jq -r ".builders[].vm_name" < "$IMAGE")"
 	cd "$(dirname "$IMAGE")/output-qemu"
-	SHA="$(sha512sum -z "$VM_NAME" | cut -f1 -d" ")"
-	openstack --os-cloud images --os-token "$OS_TOKEN" \
-		object create egi_endorsed_vas \
-		"$VM_NAME" >>/var/log/image-build.log
-	echo "SUCCESSFUL BUILD - $VM_NAME - $SHA" >>/var/log/image-build.log
+	QCOW_FILE="$VM_NAME.qcow2"
+	qemu-img convert -O qcow2 -c "$VM_NAME" "$QCOW_FILE"
+	builder/refresh.sh vo.access.egi.eu "$(cat /var/tmp/egi/.refresh_token)" images
+	OS_TOKEN="$(yq -r '.clouds.images.auth.token' /etc/openstack/clouds.yaml)"
+	SHA="$(sha512sum -z "$QCOW_FILE" | cut -f1 -d" ")"
+	{
+		ls -lh "$QCOW_FILE"
+		openstack --os-cloud images --os-token "$OS_TOKEN" \
+			object create egi_endorsed_vas \
+			"$QCOW_FILE"
+		echo "SUCCESSFUL BUILD - $QCOW_FILE - $SHA"
+	} >>/var/log/image-build.log
 fi
 
 echo "BUILD ENDED" >>/var/log/image-build.log
diff --git a/ubuntu/ubuntu-22.04.json b/ubuntu/ubuntu-22.04.json
index a428dfb..898b57f 100644
--- a/ubuntu/ubuntu-22.04.json
+++ b/ubuntu/ubuntu-22.04.json
@@ -34,7 +34,7 @@
       "qemuargs": [
           [ "-cpu", "host" ]
       ],
-      "vm_name": "Ubuntu.22.04-2024.07.31"
+      "vm_name": "Ubuntu.22.04-2024.08.06"
      }
   ],
   "provisioners": [