diff --git a/composer.json b/composer.json
index 22a2f08..646c004 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
   },
   "require": {
     "php": ">=5.5",
-    "symfony/console": "^3.2",
+    "symfony/console": "^3.2 || ^4.0",
     "symfony/process": "^3.2",
     "symfony/yaml": "^3.2 || ^4.0",
     "gitonomy/gitlib": "~1.0",