diff --git a/manifest.json b/manifest.json
index 69cbe6f..2d8f9e8 100644
--- a/manifest.json
+++ b/manifest.json
@@ -17,7 +17,7 @@
         "email": "jean-baptiste@holcroft.fr"
     }],
     "requirements": {
-        "yunohost": ">= 4.0"
+        "yunohost": ">= 4.0.0"
     },
     "multi_instance": true,
     "services": [
diff --git a/scripts/install b/scripts/install
index 66a3806..38d8193 100644
--- a/scripts/install
+++ b/scripts/install
@@ -238,11 +238,12 @@ ynh_add_fail2ban_config --logpath="/var/log/nginx/$domain-access.log" --failrege
 #=================================================
 ynh_script_progression --message="Configuring SSOwat..."
 
-# Make app public if necessary
-if [ "$is_public" -eq 1 ]
+# Make app public if necessary or protect it
+if [ $is_public -eq 1 ]
 then
-	# makes sure no SSO credentials to be passed
-	ynh_app_setting_set --app="$app" --key=skipped_uris --value="/"
+	# Everyone can access the app.
+	# The "main" permission is automatically created before the install script.
+	ynh_permission_update --permission "main" --add "visitors"
 fi
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 890fe04..ba53da0 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -254,18 +254,6 @@ yunohost service add "$app-server" --log="/var/log/$app/server.log"
 yunohost service add "$app-worker" --log="/var/log/$app/worker.log"
 yunohost service add "$app-beat"   --log="/var/log/$app/beat.log"
 
-#=================================================
-# SETUP SSOWAT
-#=================================================
-ynh_script_progression --message="Upgrading SSOwat configuration..."
-
-# Make app public if necessary
-if [ "$is_public" -eq 1 ]
-then
-	# makes sure no SSO credentials to be passed
-	ynh_app_setting_set --app="$app" --key=skipped_uris --value="/"
-fi
-
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================