diff --git a/README.md b/README.md
index 0990358..dfc41b0 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ If you don't have YunoHost, please see [here](https://yunohost.org/install) to k
 
 Backdrop CMS is a simple, lightweight, and easy-to-use Content Management System for building professional websites.
 
-**Shipped version:** 1.18.3
+**Shipped version:** 1.19.0
 
 ## Screenshots
 
@@ -47,7 +47,7 @@ Backdrop CMS includes an update utility to handle any necessary changes to the d
 
 ## Links
 
- * Report a bug: https://github.com/YunoHost-Apps/ttrss_ynh/issues
+ * Report a bug: https://github.com/YunoHost-Apps/backdrop_ynh/issues
  * Backdrop website: https://backdropcms.org/
  * Backdrop repository: https://github.com/backdrop/backdrop
  * YunoHost website: https://yunohost.org/
diff --git a/README_fr.md b/README_fr.md
index 33646b3..4698511 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -12,7 +12,7 @@ Si vous n’avez pas YunoHost, consultez [le guide](https://yunohost.org/install
 
 Backdrop CMS is a simple, lightweight, and easy-to-use Content Management System for building professional websites.
 
-**Version incluse :** 1.18.3
+**Version incluse :** 1.19.0
 
 ## Captures d’écran
 
diff --git a/check_process b/check_process
index f0d3ba9..575dd15 100644
--- a/check_process
+++ b/check_process
@@ -1,8 +1,8 @@
 ;; Nom du test
 	; Manifest
-		domain="domain.tld"	(DOMAIN)
-		path="/path"	    (PATH)
-		is_public=1	(PUBLIC|public=1|private=0)
+		domain="domain.tld"
+		path="/path"
+		is_public=1
 	; Checks
 		pkg_linter=1
 		setup_sub_dir=1
@@ -11,6 +11,7 @@
 		setup_private=1
 		setup_public=1
 		upgrade=1
+		upgrade=1	from_commit=e52fe0eb74d4e8e37bb1c04872ef425cfd914758
 		backup_restore=1
 		multi_instance=1
 		change_url=1
@@ -18,6 +19,6 @@
 Email=
 Notification=none
 ;;; Upgrade options
-	; commit=CommitHash
-		name=Name and date of the commit.
+	; commit=e52fe0eb74d4e8e37bb1c04872ef425cfd914758
+		name=Merge pull request #13 from YunoHost-Apps/1.18.3
 		manifest_arg=domain=DOMAIN&path=PATH&admin=USER&is_public=1&
diff --git a/conf/app.src b/conf/app.src
index 2fabc25..cb7108a 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/backdrop/backdrop/releases/download/1.18.3/backdrop.zip
-SOURCE_SUM=fb82cb6020db15954ed23976c513d3d0f713aa1c77759be065106e4f57b2999b
+SOURCE_URL=https://github.com/backdrop/backdrop/releases/download/1.19.0/backdrop.zip
+SOURCE_SUM=a19ff45d576ad60792b22061b28dfda4a85980aaa7ee5dcd738513894e55192d
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=zip
 SOURCE_IN_SUBDIR=true
diff --git a/doc/DISCLAIMER.md b/doc/DISCLAIMER.md
new file mode 100644
index 0000000..e69de29
diff --git a/manifest.json b/manifest.json
index 2308e47..3589fb0 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,15 +6,23 @@
     "en": "Easy-to-use CMS for building professional websites",
     "fr": "CMS facile à utiliser pour créer des sites Web professionnels"
   },
-  "version": "1.18.3~ynh1",
+  "version": "1.19.0~ynh1",
   "url": "https://backdropcms.org/",
+  "upstream": {
+        "license": "GPL-2.0",
+        "website": "https://backdropcms.org/",
+        "demo": "https://backdropcms.org/demo",
+        "admindoc": "https://yunohost.org/packaging_apps",
+        "userdoc": "https://backdropcms.org/user-guide",
+        "code": "https://github.com/backdrop/backdrop"
+    },
   "license": "GPL-2.0",
   "maintainer": {
     "name": "eric_G",
     "email": ""
   },
   "requirements": {
-    "yunohost": ">= 4.1.7"
+    "yunohost": ">= 4.2.4"
   },
   "multi_instance": true,
   "services": [
diff --git a/scripts/install b/scripts/install
index 7df3f20..50cb573 100644
--- a/scripts/install
+++ b/scripts/install
@@ -111,9 +111,9 @@ ynh_store_file_checksum --file="$final_path/settings.php"
 #=================================================
 
 # Set permissions to app files
-chown -R root: $final_path
-chown -R $app:www-data $final_path/files
-chmod -R 770 $final_path/files
+chmod 750 "$final_path"
+chmod -R o-rwx "$final_path"
+chown -R $app:www-data "$final_path"
 
 #=================================================
 # SETUP SSOWAT
diff --git a/scripts/restore b/scripts/restore
index 8980cb7..2b7ac1b 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -66,9 +66,9 @@ ynh_restore_file --origin_path="$final_path"
 #=================================================
 
 # Set permissions to app files
-chown -R root: $final_path
-chown -R $app:www-data $final_path/files
-chmod -R 770 $final_path/files
+chmod 750 "$final_path"
+chmod -R o-rwx "$final_path"
+chown -R $app:www-data "$final_path"
 
 #=================================================
 # RESTORE THE PHP-FPM CONFIGURATION
diff --git a/scripts/upgrade b/scripts/upgrade
index 69a1bf9..8f8264f 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -85,23 +85,8 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	ynh_script_progression --message="Reconfiguring Backdrop..." --weight=2
 
-	# Create a temporary directory
-	tmpdir="$(mktemp -d)"
-
-	# Backup the config file in the temp dir
-	cp -a "$final_path/settings.php" "$tmpdir/settings.php"
-
-	# Remove the app directory securely
-	ynh_secure_remove --file="$final_path"
-
 	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$final_path"
-
-	#Copy the admin saved settings from tmp directory to final path	
-	cp -a "$tmpdir/settings.php" "$final_path/settings.php"
-
-	# Remove the tmp directory securely
-	ynh_secure_remove --file="$tmpdir"
+	ynh_setup_source --dest_dir="$final_path" --keep="$final_path/settings.php"
 fi
 
 #=================================================
@@ -127,9 +112,9 @@ ynh_add_fpm_config --package="$extra_php_dependencies"
 #=================================================
 
 # Set permissions to app files
-chown -R root: $final_path
-chown -R $app:www-data $final_path/files
-chmod -R 770 $final_path/files
+chmod 750 "$final_path"
+chmod -R o-rwx "$final_path"
+chown -R $app:www-data "$final_path"
 
 #=================================================
 # GENERIC FINALIZATION