diff --git a/composer.json b/composer.json
index 29cf086fb4882bb2b188d37bee5bef93947c38e2..77e2eec3ce56f09b3d6b9b6daf77a2475fd4a5d6 100644
--- a/composer.json
+++ b/composer.json
@@ -64,7 +64,8 @@
 		"po-files": {
 			"pl_PL": "pl_PL.po"
 		},
-		"php-requires": "7.3"
+		"php-requires": "7.4",
+		"prefix_psr": true
 	},
 	"scripts": {
 		"test": "echo composer is alive",