diff --git a/composer.json b/composer.json
index 926f2f0..bb2c1e1 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         "phpunit/phpunit": "~5.0",
         "mockery/mockery": "dev-master",
         "doctrine/cache": "^1.6",
-        "symfony/cache": "~3.0",
+        "symfony/cache": "~3.0 || ~4.0",
         "symfony/dependency-injection": "~2.8|~3.0",
         "symfony/http-kernel": "~2.8|~3.0",
         "illuminate/contracts": "^5.4",