diff --git a/composer.json b/composer.json
index edb7f0b..a1747d2 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         "nikic/php-parser": "~3.0",
         "symfony/console": "^2.6 || ^3.0",
         "symfony/finder": "^2.6 || ^3.0",
-        "phpdocumentor/reflection-docblock": "~2.0 || ~3.0",
+        "phpdocumentor/reflection-docblock": "~2.0 || ~3.0 || ~4.0",
         "symfony/stopwatch": "^2.7 || ^3.0",
         "symfony/filesystem": "^2.7 || ^3.0",
         "symfony/dependency-injection": "^2.7 || ^3.0",