diff --git a/composer.json b/composer.json
index db4c029..1bc8209 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
         "symfony/property-info": "^3.4|^4.0",
         "exsyst/swagger": "~0.3",
         "zircote/swagger-php": "^2.0.9",
-        "phpdocumentor/reflection-docblock": "^3.1"
+        "phpdocumentor/reflection-docblock": "^3.1|^4.0"
     },
     "require-dev": {
         "symfony/templating": "^3.4|^4.0",