Translations for close up shop in French

Here are paragraphs from public domain books translated:

"Fortunately, we do not have a dozen such as you to deal with; if we did, we would have to close up shop.”	— Par bonheur, il n’en existe pas des douzaines comme vous, sans quoi il n’y aurait plus qu’à fermer boutique.
The Extraordinary Adventures of Arsene Lupin, Gentleman Burglar, by Maurice Leblanc	Arsène Lupin gentleman-cambrioleur, de Maurice Leblanc