diff --git a/prebuilt/common/bin/backuptool.sh b/prebuilt/common/bin/backuptool.sh
index 19bd388f..c15abf08 100755
--- a/prebuilt/common/bin/backuptool.sh
+++ b/prebuilt/common/bin/backuptool.sh
@@ -6,7 +6,7 @@
 export C=/tmp/backupdir
 export SYSDEV="$(readlink -nf "$2")"
 export SYSFS="$3"
-export V=14.0
+export V=15.0
 
 export ADDOND_VERSION=3
 
diff --git a/prebuilt/common/bin/backuptool_ab.functions b/prebuilt/common/bin/backuptool_ab.functions
index 18e5835d..29c00993 100644
--- a/prebuilt/common/bin/backuptool_ab.functions
+++ b/prebuilt/common/bin/backuptool_ab.functions
@@ -5,7 +5,7 @@
 
 export S=/system
 export C=/postinstall/tmp/backupdir
-export V=14.0
+export V=15.0
 export backuptool_ab=true
 
 copy_file() {
diff --git a/prebuilt/common/bin/backuptool_ab.sh b/prebuilt/common/bin/backuptool_ab.sh
index 26953bf6..e5366be2 100755
--- a/prebuilt/common/bin/backuptool_ab.sh
+++ b/prebuilt/common/bin/backuptool_ab.sh
@@ -5,7 +5,7 @@
 
 export S=/system
 export C=/postinstall/tmp/backupdir
-export V=14.0
+export V=15.0
 
 export ADDOND_VERSION=3