diff --git a/composer.json b/composer.json
index 75acbe149..0dc0ae944 100644
--- a/composer.json
+++ b/composer.json
@@ -41,7 +41,7 @@
         "phpstan/extension-installer": "^1.3",
         "phpstan/phpstan": "^1.10",
         "phpstan/phpstan-phpunit": "^1.3",
-        "phpunit/phpunit": "^9.6",
+        "phpunit/phpunit": "^9.6.21",
         "symfony/http-client": "^5.4.45 || ^6.4 || ^7.0",
         "symfony/stopwatch": "^5.4 || ^6.4 || ^7.0"
     },
diff --git a/src/Provider/GeoIP2/Tests/GeoIP2AdapterTest.php b/src/Provider/GeoIP2/Tests/GeoIP2AdapterTest.php
index 1a3be5cac..9fbec4f6f 100644
--- a/src/Provider/GeoIP2/Tests/GeoIP2AdapterTest.php
+++ b/src/Provider/GeoIP2/Tests/GeoIP2AdapterTest.php
@@ -118,7 +118,7 @@ public function testReaderResponseIsJsonEncoded(): void
         $this->assertJson($result);
 
         $decodedResult = json_decode($result);
-        $this->assertObjectHasAttribute('city', $decodedResult);
+        $this->assertObjectHasProperty('city', $decodedResult);
     }
 
     /**