diff --git a/composer.json b/composer.json
index 5ee1bfd..88760dd 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
     "require-dev": {
         "phpunit/phpunit": "^7.5",
         "phpspec/prophecy": "^1.10",
-        "squizlabs/php_codesniffer": "^3.5.5"
+        "squizlabs/php_codesniffer": "^3.5.6"
     },
     "autoload": {
         "psr-4": {