diff --git a/scripts/install b/scripts/install
index 602ecc8..0ebe056 100755
--- a/scripts/install
+++ b/scripts/install
@@ -238,6 +238,9 @@ if [ $public_library -eq 0 ]; then
 	ynh_permission_update --permission "main" --add $admin
 fi
 
+#Kobo sync permission
+ynh_permission_create --permission="Kobo sync" --url="$domain/kobo" --allowed="visitors"
+
 #=================================================
 # RELOAD NGINX
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 9527924..a7143a7 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -134,6 +134,13 @@ if [ -z $(sqlite3 $final_path/app.db "SELECT config_kepubifypath FROM settings")
 	eval sqlite3 $final_path/app.db "\"UPDATE settings SET config_kepubifypath='/opt/kepubify/kepubify-linux-$mach' WHERE ID=1\""
 fi
 
+# Create the permission "kobo_sync" only if it doesn't exist.
+if ! ynh_permission_exists --permission="Kobo sync"
+then
+	# API Authorization with dedicated URL
+	ynh_permission_create --permission="Kobo sync" --url="$domain/kobo" --allowed="visitors"
+fi
+
 #=================================================
 # STANDARD UPGRADE STEPS
 #=================================================