diff --git a/composer.json b/composer.json
index 3f1b664..37e231e 100755
--- a/composer.json
+++ b/composer.json
@@ -8,7 +8,7 @@
         }
     ],
     "require-dev": {
-        "phpunit/phpunit": "^9.2",
+        "phpunit/phpunit": "^9.4",
         "squizlabs/php_codesniffer": "^3.5",
         "phpmd/phpmd": "^2.6",
         "phpstan/phpstan": "^0.12.18",
diff --git a/composer.lock b/composer.lock
index b8b441c..63058db 100755
--- a/composer.lock
+++ b/composer.lock
@@ -1483,7 +1483,7 @@
                 "php": "^7.3 || ^8.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^9.2"
+                "phpunit/phpunit": "^9.4"
             },
             "type": "library",
             "extra": {
@@ -2091,7 +2091,7 @@
             },
             "require-dev": {
                 "ext-mbstring": "*",
-                "phpunit/phpunit": "^9.2"
+                "phpunit/phpunit": "^9.4"
             },
             "type": "library",
             "extra": {
@@ -2400,7 +2400,7 @@
                 "php": "^7.3 || ^8.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^9.2"
+                "phpunit/phpunit": "^9.4"
             },
             "type": "library",
             "extra": {