1 files changed, 9 insertions, 1 deletions
diff --git a/composer.json b/composer.json
index 61169a4..a1ab965 100644
--- a/composer.json
+++ b/composer.json
@@ -42,6 +42,14 @@
     "name": "zetacomponents/unit-test",
     "type": "library",
     "require": {
-        "phpunit/phpunit": "^8.0"
+        "phpunit/phpunit": "^9.0"
+    },
+    "require-dev": {
+        "zetacomponents/coding-standard": "^1.0"
+    },
+    "config": {
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true
+        }
     }
 }