diff --git a/conf/rocketchat.service b/conf/rocketchat.service
index 9ab6361..7afc22b 100644
--- a/conf/rocketchat.service
+++ b/conf/rocketchat.service
@@ -6,7 +6,7 @@ After=network.target
 Type=simple
 WorkingDirectory=#DESTDIR#
 User=#USER#
-ExecStart=/usr/local/bin/node main.js
+ExecStart=#NODE# main.js
 Restart=always
 SyslogIdentifier=rocketchat
 Environment="BIND_IP=127.0.0.1"
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 6df11d4..2416f4c 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -1,9 +1,9 @@
 # common.sh
 
-ROCKETCHAT_VERSION=0.65.1
-ROCKETCHAT_SHASUM=6484c19ad922520e8ca45b2d09eff3be33f227dd74f737b67c437fb3e6c6fc4b
-NODE_VERSION=8.9.4
-DEBIAN_ISSUE=$(grep 8 /etc/issue >/dev/null && echo jessie || echo stretch)
+ROCKETCHAT_VERSION=0.70.4
+ROCKETCHAT_SHASUM=62be1d3be0c12f37c69b24c7b898030a43550afcb9d4fac24c8f301b939b7dc1
+NODE_VERSION=8.11.3
+DEBIAN_ISSUE=$(grep 9 /etc/debian_version >/dev/null && echo stretch || echo jessie)
 
 checkcmd() {
   curl -m 1 -s localhost:$port$path/api/v1/info | \
@@ -32,11 +32,18 @@ waitforservice() {
 }
 
 installnode(){
-
-  sudo apt-get install -y nodejs
-  # Meteor needs at least this version of node to work.
-  sudo npm install -g n
-  sudo n $NODE_VERSION
+  if [ $DEBIAN_ISSUE == "stretch" ]; then
+    sudo curl -sL https://deb.nodesource.com/setup_8.x -o nodesource_setup.sh
+    sudo bash nodesource_setup.sh
+    sudo apt-get install -y nodejs
+  else
+    sudo apt-get install -y npm
+    # Meteor needs at least this version of node to work.
+    sudo npm install -g n
+    sudo n $NODE_VERSION
+  fi
+  echo "node version is now: "
+  node --version
 }
 
 installdeps(){
diff --git a/scripts/backup b/scripts/backup
index ef0f093..952fe0e 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -25,11 +25,9 @@ domain=$(ynh_app_setting_get $app domain)
 
 workdir=$(pwd)
 cd $final_path
-backupfile="rocket.chat.gtar"
-touch $backupfile
-tar --exclude=$backupfile -czvf $workdir/$backupfile .
+tar -czf $workdir/rocket.chat.gtar .
 cd $workdir
-ynh_backup ./$backupfile
+ynh_backup ./rocket.chat.gtar
 
 #=================================================
 # BACKUP THE CONFIGURATION
diff --git a/scripts/install b/scripts/install
index 420d5a7..c24bd10 100644
--- a/scripts/install
+++ b/scripts/install
@@ -84,6 +84,9 @@ sed -i "s@#PORT#@$port@g" ../conf/rocketchat.service
 sed -i "s@#USER#@$serviceuser@g" ../conf/rocketchat.service
 sed -i "s@#DESTDIR#@$final_path@g" ../conf/rocketchat.service
 sed -i "s@#DBNAME#@$dbname@g" ../conf/rocketchat.service
+# absolute node path needed
+NODE_BIN=$(which node)
+sed -i "s@#NODE#@$NODE_BIN@g" ../conf/rocketchat.service
 sudo cp ../conf/rocketchat.service /etc/systemd/system/$app.service
 sudo systemctl daemon-reload