diff --git a/check_process b/check_process
index 81800f1..36d21a1 100644
--- a/check_process
+++ b/check_process
@@ -11,7 +11,7 @@
 		setup_private=1
 		setup_public=1
 		upgrade=1
-		#upgrade=1	from_commit=9e0c1be11dfe6485ab66f898494eff5bd6bac817
+		upgrade=1	from_commit=9e0c1be11dfe6485ab66f898494eff5bd6bac817
 		backup_restore=1
 		multi_instance=1
 		change_url=1
diff --git a/manifest.json b/manifest.json
index 0137bd1..c96e1e3 100644
--- a/manifest.json
+++ b/manifest.json
@@ -14,7 +14,7 @@
         "email": "gofannon@riseup.net"
     },
     "requirements": {
-        "yunohost": ">= 3.8.1"
+        "yunohost": ">= 4.1.2"
     },
     "multi_instance": true,
     "services": [
diff --git a/scripts/install b/scripts/install
index 3e3064e..7369b09 100644
--- a/scripts/install
+++ b/scripts/install
@@ -88,13 +88,14 @@ chown -R root: $final_path
 #=================================================
 # SETUP SSOWAT
 #=================================================
-ynh_script_progression --message="Configuring SSOwat..." --weight=3
+ynh_script_progression --message="Configuring permissions..." --weight=3
 
 # Make app public if necessary
 if [ $is_public -eq 1 ]
 then
-	# unprotected_uris allows SSO credentials to be passed anyway.
-	ynh_app_setting_set --app=$app --key=unprotected_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/remove b/scripts/remove
index dc5d848..14216b8 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -16,8 +16,6 @@ ynh_script_progression --message="Loading installation settings..." --weight=1
 
 app=$YNH_APP_INSTANCE_NAME
 
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
 #=================================================