diff --git a/composer.json b/composer.json
index dd99ed7..446a08c 100644
--- a/composer.json
+++ b/composer.json
@@ -15,9 +15,9 @@
     "php": ">=5.5.9",
     "monolog/monolog": "^1.0",
     "symfony/console": "^4.0",
-    "symfony/filesystem": "^3.0",
-    "symfony/event-dispatcher": "^3.0",
-    "symfony/finder": "^3.0",
+    "symfony/filesystem": "^4.0",
+    "symfony/event-dispatcher": "^4.0",
+    "symfony/finder": "^4.0",
     "symfony/yaml": "^3.0",
     "symfony/process": "^3.0"
   },