diff --git a/README.md b/README.md
index 2181800..87157d6 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 <!--
-N.B.: This README was automatically generated by https://github.com/YunoHost/apps/tree/master/tools/README-generator
+N.B.: This README was automatically generated by https://github.com/YunoHost/apps/tree/master/tools/readme_generator
 It shall NOT be edited by hand.
 -->
 
@@ -73,4 +73,4 @@ or
 sudo yunohost app upgrade nodered -u https://github.com/YunoHost-Apps/nodered_ynh/tree/testing --debug
 ```
 
-**More info regarding app packaging:** <https://yunohost.org/packaging_apps>
+**More info regarding app packaging:** <https://yunohost.org/packaging_apps>
\ No newline at end of file
diff --git a/README_fr.md b/README_fr.md
index aa29a31..9c154ae 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -1,5 +1,5 @@
 <!--
-N.B.: This README was automatically generated by https://github.com/YunoHost/apps/tree/master/tools/README-generator
+N.B.: This README was automatically generated by https://github.com/YunoHost/apps/tree/master/tools/readme_generator
 It shall NOT be edited by hand.
 -->
 
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 9ac97f6..02d4d9e 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -11,6 +11,9 @@ location ^~ __PATH__/ {
   proxy_set_header Upgrade $http_upgrade;
   proxy_set_header Connection "Upgrade";
 
+  # Enable websockets (see: https://github.com/YunoHost-Apps/nodered_ynh/issues/78 )
+  more_set_headers "Content-Security-Policy : upgrade-insecure-requests; default-src https: data: blob: ; connect-src 'self' wss://$host; object-src https: data: 'unsafe-inline'; style-src https: data: 'unsafe-inline' ; script-src https: data: 'unsafe-inline' 'unsafe-eval'; worker-src 'self' blob:;";
+
   # Include SSOWAT user panel.
   include conf.d/yunohost_panel.conf.inc;
 }
diff --git a/manifest.toml b/manifest.toml
index 3b74bfb..2a158cf 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -48,10 +48,11 @@ ram.runtime = "70M"
 
 [resources]
     [resources.sources.main]
-    url = "https://github.com/node-red/node-red/archive/refs/tags/3.1.5.tar.gz"
-    sha256 = "9ace97d3cf6b0be8420f9bdcc33f2c4b3d14ef09626ab0be8fdfdb9213cf3d32"
+    url = "https://github.com/node-red/node-red/releases/download/3.1.5/node-red-3.1.5.zip"
+    sha256 = "441c17d5a5bf6e19e2ea9eec3bc1e9af572230c47eee518c2dbb2e7374137f06"
 
     autoupdate.strategy = "latest_github_release"
+    autoupdate.asset = "node-red-.*zip"
 
     [resources.system_user]
 
diff --git a/scripts/_common.sh b/scripts/_common.sh
index b818f0f..44277c5 100755
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -4,7 +4,7 @@
 # COMMON VARIABLES
 #=================================================
 
-nodejs_version=16
+nodejs_version=20
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/change_url b/scripts/change_url
index 45029e7..ef11966 100755
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -16,7 +16,7 @@ source /usr/share/yunohost/helpers
 #=================================================
 ynh_script_progression --message="Stopping a systemd service..." --weight=1
 
-ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"
+ynh_systemd_action --service_name="$app" --action="stop" --log_path="/var/log/$app/$app.log"
 
 #=================================================
 # MODIFY URL IN NGINX CONF
diff --git a/scripts/restore b/scripts/restore
index 93e81a7..58545e4 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -26,7 +26,7 @@ ynh_restore_file --origin_path="$install_dir"
 
 chmod 750 "$install_dir"
 chmod -R o-rwx "$install_dir"
-chown -R $app: "$install_dir"
+chown -R "$app:" "$install_dir"
 
 #=================================================
 # RESTORE SYSTEM CONFIGURATIONS
diff --git a/scripts/upgrade b/scripts/upgrade
index f11b86c..3febcdd 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -16,7 +16,7 @@ source /usr/share/yunohost/helpers
 #=================================================
 ynh_script_progression --message="Stopping a systemd service..." --weight=1
 
-ynh_systemd_action --service_name=$app --action="stop"
+ynh_systemd_action --service_name="$app" --action="stop"
 
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
@@ -44,7 +44,7 @@ fi
 # In older versions of the package, the port serving the webui was opened to anyone,
 # allowing direct access to Node-RED... let's close it.
 if yunohost firewall list | grep -q "\- $port$"; then
-    ynh_exec_warn_less yunohost firewall disallow TCP $port
+    ynh_exec_warn_less yunohost firewall disallow TCP "$port"
 fi
 
 #=================================================
@@ -117,7 +117,7 @@ yunohost service add "$app" --description="Low-code programming for event-driven
 #=================================================
 ynh_script_progression --message="Starting a systemd service..." --weight=3
 
-ynh_systemd_action --service_name=$app --action="start"
+ynh_systemd_action --service_name="$app" --action="start"
 
 #=================================================
 # END OF SCRIPT
diff --git a/tests.toml b/tests.toml
index 724c9b5..c97f408 100644
--- a/tests.toml
+++ b/tests.toml
@@ -4,10 +4,12 @@ test_format = 1.0
 
 [default]
 
-    # ------------------------
-    # -------------------------------
-    # Commits to test upgrade from
-    # -------------------------------
+# -------------------------------
+# Commits to test upgrade from
+# -------------------------------
 
     [default.test_upgrade_from.3dae97a7]
     name = "3.0.2~ynh2"
+
+    [default.test_upgrade_from.ca5545af]
+    name = "3.1.4~ynh1 (update nodejs 16 to 20)"