diff --git a/composer.json b/composer.json
index a145dd2..439db7f 100644
--- a/composer.json
+++ b/composer.json
@@ -22,19 +22,19 @@
     "require": {
         "php": ">=7.1",
         "graylog2/gelf-php": "^1.5",
-        "symfony/config": "^3.0 || ^4.0",
-        "symfony/console": "^3.0 || ^4.0",
-        "symfony/dependency-injection": "^3.0 || ^4.0",
-        "symfony/monolog-bundle": "^3.0 || ^4.0",
-        "symfony/yaml": "^3.0 || ^4.0"
+        "symfony/config": "^3.0|^4.0|^5.0|^6.0",
+        "symfony/console": "^3.0|^4.0|^5.0|^6.0",
+        "symfony/dependency-injection": "^3.0|^4.0|^5.0|^6.0",
+        "symfony/monolog-bundle": "^3.0|^4.0|^5.0|^6.0",
+        "symfony/yaml": "^3.0|^4.0|^5.0|^6.0"
     },
     "require-dev": {
         "chaplean/coding-standard": "^1.1",
         "mockery/mockery": "dev-master",
         "php-coveralls/php-coveralls": "^2.1",
-        "phpunit/phpunit": "^6.3",
-        "symfony/http-kernel": "^2.8 || ^3.0 || ^4.0",
-        "symfony/var-dumper": "^2.8 || ^3.0 || ^4.0"
+        "phpunit/phpunit": "^6|^7|^8",
+        "symfony/http-kernel": "^2.8|^3.0|^4.0|^5.0|^6.0",
+        "symfony/var-dumper": "^2.8|^3.0|^4.0|^5.0|^6.0"
     },
     "config": {
         "bin-dir": "bin",