diff --git a/manifest.json b/manifest.json
index 3511c0b..181479d 100644
--- a/manifest.json
+++ b/manifest.json
@@ -3,8 +3,8 @@
     "id": "bookwyrm",
     "packaging_format": 1,
     "description": {
-        "en": "$app is a platform for social reading.",
-        "fr": "$app est une plateforme de lecture sociale."
+        "en": "Platform for social reading",
+        "fr": "Plateforme de lecture sociale"
     },
     "version": "0.5.3~ynh1",
     "url": "https://github.com/bookwyrm-social/bookwyrm",
@@ -20,7 +20,7 @@
         "name": "oufmilo"
     },
     "requirements": {
-        "yunohost": ">= 4.3.0"
+        "yunohost": ">= 11.0.9"
     },
        "services": [
         "nginx",
diff --git a/scripts/backup b/scripts/backup
index c09de5e..cea1313 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -39,11 +39,6 @@ datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 #=================================================
 ynh_print_info --message="Declaring files to be backed up..."
 
-### N.B. : the following 'ynh_backup' calls are only a *declaration* of what needs
-### to be backuped and not an actual copy of any file. The actual backup that
-### creates and fill the archive with the files happens in the core after this
-### script is called. Hence ynh_backups calls takes basically 0 seconds to run.
-
 #=================================================
 # BACKUP THE APP MAIN DIR
 #=================================================
@@ -62,12 +57,6 @@ ynh_backup --src_path="$datadir" --is_big
 
 ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
-
-#=================================================
-# SPECIFIC BACKUP
-#=================================================
-
-
 #=================================================
 # BACKUP SYSTEMD
 #=================================================
@@ -77,7 +66,6 @@ ynh_backup --src_path="/etc/systemd/system/${app}-server.service"
 ynh_backup --src_path="/etc/systemd/system/${app}-worker.service"
 ynh_backup --src_path="/etc/systemd/system/$app.target"
 
-
 #=================================================
 # BACKUP THE POSTGRESQL DATABASE
 #=================================================
diff --git a/scripts/install b/scripts/install
index 29a9382..3baf557 100755
--- a/scripts/install
+++ b/scripts/install
@@ -63,7 +63,6 @@ ynh_app_setting_set --app=$app --key=admin --value=$admin
 #=================================================
 ynh_script_progression --message="Finding an available port..." --weight=1
 
-
 port=$(ynh_find_port --port=8000)
 ynh_app_setting_set --app=$app --key=port --value=$port
 
@@ -72,7 +71,7 @@ ynh_app_setting_set --app=$app --key=port --value=$port
 #=================================================
 ynh_script_progression --message="Installing dependencies..." --weight=1
 
-ynh_install_app_dependencies $pkg_dependencies
+ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
 #=================================================
 # CREATE DEDICATED USER
@@ -87,14 +86,11 @@ ynh_system_user_create --username=$app --home_dir="$final_path"
 #=================================================
 ynh_script_progression --message="Creating a PostgreSQL database..." --weight=1
 
-db_name=$(ynh_sanitize_dbid --db_name="${app}")
-db_user=$(ynh_sanitize_dbid --db_name=$app)
+db_name=$(ynh_sanitize_dbid --db_name=$app)
+db_user=$db_name
 ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-ynh_app_setting_set --app=$app --key=db_user --value=$db_user
 ynh_psql_test_if_first_run
 ynh_psql_setup_db --db_user=$db_user --db_name=$db_name
-ynh_psql_execute_as_root --sql="ALTER USER $db_user CREATEDB;"
-db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
@@ -146,13 +142,11 @@ ynh_add_nginx_config
 #=================================================
 ynh_script_progression --message="Creating a data directory..." --weight=1
 
-
 datadir=/home/yunohost.app/$app
 ynh_app_setting_set --app=$app --key=datadir --value=$datadir
 
 mkdir -p $datadir
 
-
 chmod 750 "$datadir"
 chmod -R o-rwx "$datadir"
 chown -R $app:www-data "$datadir"
@@ -169,11 +163,8 @@ ynh_add_systemd_config --service="${app}-server" --template="${app}-server.servi
 ynh_add_systemd_config --service="${app}-worker" --template="${app}-worker.service"
 ynh_add_systemd_config --service="${app}-beat"   --template="${app}-beat.service"
 
-
 #=================================================
 # GENERIC FINALIZATION
-#=================================================
-
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
 #=================================================
@@ -193,7 +184,6 @@ ynh_systemd_action --service_name="${app}-beat" --action="start" --log_path="sys
 ynh_systemd_action --service_name="${app}-server" --action="start" --log_path="systemd" --line_match="Booting worker with pid"
 ynh_systemd_action --service_name="${app}-worker" --action="start" --log_path="systemd" --line_match="ready"
 
-
 #=================================================
 # SETUP SSOWAT
 #=================================================
diff --git a/scripts/remove b/scripts/remove
old mode 100755
new mode 100644
index 50177c2..3f2e27b
--- a/scripts/remove
+++ b/scripts/remove
@@ -103,16 +103,6 @@ ynh_script_progression --message="Removing dependencies..." --weight=1
 # Remove metapackage and its dependencies
 ynh_remove_app_dependencies
 
-#=================================================
-# CLOSE A PORT
-#=================================================
-
-if yunohost firewall list | grep -q "\- $port$"
-then
-	ynh_script_progression --message="Closing port $port..." --weight=1
-	ynh_exec_warn_less yunohost firewall disallow TCP $port
-fi
-
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
diff --git a/scripts/restore b/scripts/restore
old mode 100755
new mode 100644
index bec82ea..ac84191
--- a/scripts/restore
+++ b/scripts/restore
@@ -80,7 +80,6 @@ ynh_script_progression --message="Restoring the app main directory..." --weight=
 
 ynh_restore_file --origin_path="$final_path"
 
-
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
@@ -106,7 +105,7 @@ chown -R $app:www-data "$datadir"
 ynh_script_progression --message="Reinstalling dependencies..." --weight=1
 
 # Define and install dependencies
-ynh_install_app_dependencies $pkg_dependencies
+ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
 #=================================================
 # RESTORE THE POSTGRESQL DATABASE
@@ -114,10 +113,8 @@ ynh_install_app_dependencies $pkg_dependencies
 ynh_script_progression --message="Restoring the PostgreSQL database..." --weight=1
 
 ynh_psql_test_if_first_run
-db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
 ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
-ynh_psql_execute_as_root --sql="ALTER USER $db_user CREATEDB;"
-ynh_psql_execute_file_as_root --file="./db.sql" --database="$db_name"
+ynh_psql_execute_file_as_root --file="./db.sql" --database=$db_name
 
 #=================================================
 # RESTORE SYSTEMD
diff --git a/scripts/upgrade b/scripts/upgrade
index fc36670..c6c6072 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -32,12 +32,6 @@ admin_mail=$(ynh_user_get_info --username=$admin --key=username)
 # CHECK VERSION
 #=================================================
 
-### This helper will compare the version of the currently installed app and the version of the upstream package.
-### $upgrade_type can have 2 different values
-### - UPGRADE_APP if the upstream app version has changed
-### - UPGRADE_PACKAGE if only the YunoHost package has changed
-### ynh_check_app_version_changed will stop the upgrade if the app is up to date.
-### UPGRADE_APP should be used to upgrade the core app only if there's an upgrade to do.
 upgrade_type=$(ynh_check_app_version_changed)
 
 #=================================================
@@ -65,49 +59,6 @@ ynh_systemd_action --action="stop" --service_name="${app}-beat" --log_path="syst
 ynh_systemd_action --action="stop" --service_name="${app}-server" --log_path="systemd" --line_match="Stopped"
 ynh_systemd_action --action="stop" --service_name="${app}-worker" --log_path="systemd" --line_match="Stopped"
 
-#=================================================
-# ENSURE DOWNWARD COMPATIBILITY
-#=================================================
-ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
-
-#
-# N.B. : the followings setting migrations snippets are provided as *EXAMPLES*
-# of what you may want to do in some cases (e.g. a setting was not defined on
-# some legacy installs and you therefore want to initiaze stuff during upgrade)
-#
-
-# If db_name doesn't exist, create it
-#if [ -z "$db_name" ]; then
-#	db_name=$(ynh_sanitize_dbid --db_name=$app)
-#	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-#fi
-
-# If final_path doesn't exist, create it
-#if [ -z "$final_path" ]; then
-#	final_path=/var/www/$app
-#	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
-#fi
-
-### If nobody installed your app before 4.1,
-### then you may safely remove these lines
-
-# Cleaning legacy permissions
-if ynh_legacy_permissions_exists; then
-	ynh_legacy_permissions_delete_all
-
-	ynh_app_setting_delete --app=$app --key=is_public
-fi
-
-if ! ynh_permission_exists --permission="admin"; then
-	# Create the required permissions
-	ynh_permission_create --permission="admin" --url="/admin" --allowed=$admin
-fi
-
-# Create a permission if needed
-if ! ynh_permission_exists --permission="api"; then
-	ynh_permission_create --permission="api" --url="/api" --allowed="visitors" --show_tile="false" --protected="true"
-fi
-
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
@@ -128,12 +79,6 @@ then
 	ynh_setup_source --dest_dir="$final_path"
 fi
 
-# FIXME: this should be managed by the core in the future
-# Here, as a packager, you may have to tweak the ownerhsip/permissions
-# such that the appropriate users (e.g. maybe www-data) can access
-# files in some cases.
-# But FOR THE LOVE OF GOD, do not allow r/x for "others" on the entire folder -
-# this will be treated as a security issue.
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
@@ -149,7 +94,6 @@ chown $app:www-data "$final_path/.env"
 
 set -a; source "$final_path/.env"; set +a
 
-
 ynh_secure_remove --file="$final_path/venv"
 mkdir "$final_path/venv"
 python3 -m venv "$final_path/venv"
@@ -168,8 +112,7 @@ ynh_add_nginx_config
 #=================================================
 ynh_script_progression --message="Upgrading dependencies..." --weight=1
 
-ynh_install_app_dependencies $pkg_dependencies
-
+ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
 #=================================================
 # SETUP SYSTEMD
@@ -185,7 +128,6 @@ ynh_add_systemd_config --service="${app}-beat"   --template="${app}-beat.service
 
 #=================================================
 # GENERIC FINALIZATION
-
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
 #=================================================