Updated composer.json

Author: Ang3

composer.json

@@ -21,14 +21,14 @@
         "php": ">=7.2",
         "ext-curl": "*",
         "phpxmlrpc/phpxmlrpc": "^4.0",
-        "symfony/serializer": ">=3"
+        "symfony/serializer": ">=3.2.0"
     },
     "require-dev": {
         "roave/security-advisories": "dev-master",
         "ang3/php-dev-binaries": "^1.0",
-        "symfony/var-dumper": "^4.0",
-        "phpunit/phpunit": "^8.5",
-        "symfony/property-info": "^5.0",
-        "symfony/inflector": "^5.0"
+        "symfony/var-dumper": ">=3.2.0",
+        "phpunit/phpunit": ">=7.0",
+        "symfony/property-info": ">=3.2.0",
+        "symfony/inflector": ">=3.2.0"
     }
 }