diff --git a/check_process b/check_process
new file mode 100644
index 0000000..4388983
--- /dev/null
+++ b/check_process
@@ -0,0 +1,33 @@
+;; Test complet
+	; Manifest
+		server="domain.tld:22"
+	    ssh_user="sam"
+        public_key="ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILM5TaFx9x9gXAkdRqEw39tpBLW/jXFzcBe9diuPlEfP"
+        quota="5G"
+    ; Checks
+		pkg_linter=1
+		setup_sub_dir=0
+		setup_root=0
+		setup_nourl=0
+		setup_private=0
+		setup_public=0
+		upgrade=1
+		backup_restore=1
+		multi_instance=1
+		incorrect_path=0
+		port_already_use=0
+		change_url=0
+;;; Levels
+	Level 1=auto
+	Level 2=auto
+	Level 3=auto
+	Level 4=1
+	Level 5=auto
+	Level 6=auto
+	Level 7=auto
+	Level 8=0
+	Level 9=0
+	Level 10=0
+;;; Options
+Email=ljf+borgserver_ynh@reflexlibre.net
+Notification=down
diff --git a/manifest.json b/manifest.json
index b102291..395997e 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Offer backup storage to a friend.",
         "fr": "Offrez un espace de stockage à un⋅e ami⋅e."
     },
-    "version": "1.0",
+    "version": "1.0.1",
     "url": "https://borgbackup.readthedocs.io",
     "license": "BSD-3-Clause",
     "maintainer": {
@@ -15,7 +15,7 @@
         "url": "https://reflexlibre.net"
     },
     "requirements": {
-        "yunohost": ">= 2.7.2"
+        "yunohost": ">= 3.1"
     },
     "multi_instance": true,
     "services": [],
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 3a461a3..215e0ee 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -58,3 +58,57 @@ ynh_configure () {
     ynh_render_template "${PKG_DIR}/conf/$1.j2" $2
     ynh_store_file_checksum $2
 }
+
+# Checks the app version to upgrade with the existing app version and returns:
+# - UPGRADE_APP if the upstream app version has changed
+# - UPGRADE_PACKAGE if only the YunoHost package has changed
+#
+## It stops the current script without error if the package is up-to-date
+#
+# This helper should be used to avoid an upgrade of an app, or the upstream part
+# of it, when it's not needed
+#
+# To force an upgrade, even if the package is up to date,
+# you have to set the variable YNH_FORCE_UPGRADE before.
+# example: sudo YNH_FORCE_UPGRADE=1 yunohost app upgrade MyApp
+
+# usage: ynh_check_app_version_changed
+ynh_check_app_version_changed () {
+  local force_upgrade=${YNH_FORCE_UPGRADE:-0}
+  local package_check=${PACKAGE_CHECK_EXEC:-0}
+
+  # By default, upstream app version has changed
+  local return_value="UPGRADE_APP"
+
+  local current_version=$(ynh_read_manifest "/etc/yunohost/apps/$YNH_APP_INSTANCE_NAME/manifest.json" "version" || echo 1.0)
+  local current_upstream_version="${current_version/~ynh*/}"
+  local update_version=$(ynh_read_manifest "../manifest.json" "version" || echo 1.0)
+  local update_upstream_version="${update_version/~ynh*/}"
+
+  if [ "$current_version" == "$update_version" ] ; then
+      # Complete versions are the same
+      if [ "$force_upgrade" != "0" ]
+      then
+        echo "Upgrade forced by YNH_FORCE_UPGRADE." >&2
+        unset YNH_FORCE_UPGRADE
+      elif [ "$package_check" != "0" ]
+      then
+        echo "Upgrade forced for package check." >&2
+      else
+        ynh_die "Up-to-date, nothing to do" 0
+      fi
+  elif [ "$current_upstream_version" == "$update_upstream_version" ] ; then
+    # Upstream versions are the same, only YunoHost package versions differ
+    return_value="UPGRADE_PACKAGE"
+  fi
+  echo $return_value
+}
+
+
+ynh_install_backports () {
+    echo "deb http://httpredir.debian.org/debian stretch-backports main" > /etc/apt/sources.list.d/$app-stretch-backports.list
+}
+
+ynh_remove_backports () {
+    rm /etc/apt/sources.list.d/$app-stretch-backports.list
+}
diff --git a/scripts/install b/scripts/install
index 0cc1099..4d4bd66 100755
--- a/scripts/install
+++ b/scripts/install
@@ -29,12 +29,17 @@ ynh_export ssh_user public_key quota
 #=================================================
 ynh_save_args ssh_user public_key quota
 
+#=================================================
+# CONFIGURE BACKPORTS
+#=================================================
+# We need borg 1.1+ available only in backports
+ynh_install_backports
+
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
 ynh_install_app_dependencies $pkg_dependencies
-pip3 install setuptools --upgrade
-pip3 install borgbackup
+ynh_package_install -t stretch-backports borgbackup
 
 #=================================================
 # CREATE SSH USER USED BY BORG
diff --git a/scripts/remove b/scripts/remove
index 3125ed6..2ee3cba 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -6,6 +6,7 @@
 # IMPORT GENERIC HELPERS
 #=================================================
 
+source _common.sh
 source /usr/share/yunohost/helpers
 
 #=================================================
@@ -20,6 +21,11 @@ ssh_user=$(ynh_app_setting_get $app ssh_user)
 #=================================================
 ynh_remove_app_dependencies
 
+#=================================================
+# REMOVE BACKPORTS
+#=================================================
+ynh_remove_backports
+
 #=================================================
 # REMOVE FILES
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 0b84591..629eddd 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -32,11 +32,16 @@ export public_key=$(ynh_app_setting_get $app public_key)
 export quota=$(ynh_app_setting_get $app quota)
 
 #=================================================
-# STORE SETTINGS FROM MANIFEST
+# CONFIGURE BACKPORTS
+#=================================================
+# We need borg 1.1+ available only in backports
+ynh_install_backports
+
+#=================================================
+# INSTALL DEPENDENCIES
 #=================================================
 ynh_install_app_dependencies $pkg_dependencies
-pip3 install setuptools --upgrade
-pip3 install borgbackup
+ynh_package_install -t stretch-backports borgbackup
 
 #=================================================
 # CREATE SSH USER USED BY BORG
diff --git a/scripts/upgrade b/scripts/upgrade
index 35d72d2..a2f1c92 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -15,6 +15,11 @@ source /usr/share/yunohost/helpers
 
 app=$YNH_APP_INSTANCE_NAME
 
+#=================================================
+# CHECK IF AN UPGRADE IS NEEDED
+#=================================================
+ynh_check_app_version_changed
+
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================