diff --git a/composer.json b/composer.json
index 6c8849c..84450f6 100644
--- a/composer.json
+++ b/composer.json
@@ -17,10 +17,10 @@
     ],
     "require": {
         "php": ">=5.5.9",
-        "symfony/security-core": "~2.8|~3.0|~4.0"
+        "symfony/security-core": "^2.8|^3.0|^4.0|^5.0"
     },
     "require-dev": {
-        "symfony/phpunit-bridge": "~2.8|~3.0|~4.0",
+        "symfony/phpunit-bridge": "^2.8|^3.0|^4.0|^5.0",
         "doctrine/common": "~2.2",
         "doctrine/dbal": "~2.2",
         "psr/log": "~1.0"