diff --git a/composer.json b/composer.json
index 3c22314..0ad5327 100644
--- a/composer.json
+++ b/composer.json
@@ -1,11 +1,13 @@
 {
 	"require" : {
 		"php": "^8.4",
-		"squizlabs/php_codesniffer" : "^2.8",
 		"mike42/escpos-php": "^1.5",
 		"chillerlan/php-qrcode": "^5.0.3", 
 		"zbateson/mb-wrapper": "2.0.1" 
 	},
+	"require-dev": {
+        "squizlabs/php_codesniffer" : "^4.0",
+    },
 	"autoload" : {
 		"psr-4" : {
 			"ReceiptPrintHq\\EscposTools\\" : "src/"
diff --git a/dockerfile b/dockerfile
index 3ae81d7..6b19d48 100644
--- a/dockerfile
+++ b/dockerfile
@@ -37,7 +37,7 @@ RUN rm /etc/cups/snmp.conf
 RUN rm /home/escpos-emu/cups/cups-files.conf
 
 #Installation HTML converter
-RUN composer install
+RUN composer install --no-dev
 RUN rm composer.json && rm composer.lock
 
 #Configurer l'environnement d'exécution