diff --git a/README.MD b/README.MD
index c3c65f9..4ecd8f6 100644
--- a/README.MD
+++ b/README.MD
@@ -9,7 +9,7 @@ To create deb file you just need to run the bellow command :
 
 ```bash
 . joplin-server2deb
-debmake_runAllStep
+debmaker_runAllStep
 ```
 
 ### packages available in shared repository
diff --git a/lib/function.sh b/lib/function.sh
index 443bb88..c8fe4b6 100644
--- a/lib/function.sh
+++ b/lib/function.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+DEBOOTSTRAP_DIR=cache/debootstrap/
 source ressources/${APP}/${APP}
 CACHE_APP=cache/${APP}/
 MOUNT_APP=/mnt/debmaker/${APP}/
@@ -6,6 +7,18 @@ MOUNT_APP=/mnt/debmaker/${APP}/
 [ -d ${CACHE_APP} ] || mkdir -p ${CACHE_APP}
 
 ########################## SUB FUNCTION ##########################
+
+debmaker_debootstrapUpdate(){
+	[ -d ${DEBOOTSTRAP_DIR}  ] || mkdir ${DEBOOTSTRAP_DIR} 
+	URL=https://salsa.debian.org/installer-team/debootstrap/-/archive/master/debootstrap-master.tar.gz
+	FILES="debootstrap-master/debootstrap debootstrap-master/scripts/ debootstrap-master/functions"
+	wget -qO - ${URL} | tar -C ${DEBOOTSTRAP_DIR} --strip-components=1 -zx ${FILES} 
+}
+
+zdebmaker_getDep(){
+	[ -d ${DEBOOTSTRAP_DIR}  ] || debmaker_debootstrapUpdate
+}
+
 valideStep(){
 	CURRENT_STEP=$1
 	RESULT=0
@@ -47,7 +60,7 @@ previousStep(){
 
 ########################## FUNCTION ##########################
 
-debmake_mountStep(){
+debmaker_mountStep(){
 	CURRENT_STEP=$1
 	[ -d ${MOUNT_APP}/${CURRENT_STEP} ] || sudo mkdir -p ${MOUNT_APP}/${CURRENT_STEP}
 	sudo mount ${CACHE_APP}/${CURRENT_STEP} ${MOUNT_APP}/${CURRENT_STEP}
@@ -58,14 +71,14 @@ debmake_mountStep(){
 	sleep 2
 }
 
-debmake_umountStep(){
+debmaker_umountStep(){
 	CURRENT_STEP=$1
 	sudo umount ${MOUNT_APP}/${CURRENT_STEP}/sys
 	sudo umount ${MOUNT_APP}/${CURRENT_STEP}/proc
 	sudo umount ${MOUNT_APP}/${CURRENT_STEP}
 }
 
-debmake_chrootStep(){
+debmaker_chrootStep(){
 	CURRENT_STEP=$1
 	debmake_mountStep ${CURRENT_STEP}
 	[ -d ${MOUNT_APP}/${CURRENT_STEP}/tmp/dist/${APP} ] && sudo rm -rf ${MOUNT_APP}/${CURRENT_STEP}/tmp/dist/
@@ -80,16 +93,16 @@ debmake_chrootStep(){
 
 ########################## FUNCTION ##########################
 
-debmake_runStepOS() {
+debmaker_runStepOS() {
 	CURRENT_STEP=os
 	getSizeImage
 	createImage
 	debmake_mountStep ${CURRENT_STEP}
-	sudo debootstrap ${DEBIAN_VERSION_CODENAME} ${MOUNT_APP}/os/
+	sudo ${DEBOOTSTRAP_DIR}/debootstrap ${DEBIAN_VERSION_CODENAME} ${MOUNT_APP}/os/
 	debmake_umountStep ${CURRENT_STEP}
 }
 
-debmake_runStepCustom() {
+debmaker_runStepCustom() {
 	CURRENT_STEP=$1
 	valideStep ${CURRENT_STEP}
 	PREVIOUS=$(previousStep ${CURRENT_STEP})
@@ -99,10 +112,13 @@ debmake_runStepCustom() {
 	debmake_chrootStep $1  /tmp/dist/exec_in_chroot.sh ${APP} ${CURRENT_STEP} ${GIT_VERSION} ${DEB_VERSION}
 }
 
-debmake_runAllStep(){
+debmaker_runAllStep(){
 	debmake_runStepOS
 	for tmp in ${STEP}
 	do
 		debmake_runStepCustom $tmp
 	done
 }
+
+zdebmaker_getDep
+