diff --git a/composer.json b/composer.json
index 1bc8209..04fe0ab 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         "php": "^7.0",
         "symfony/framework-bundle": "^3.4|^4.0",
         "symfony/property-info": "^3.4|^4.0",
-        "exsyst/swagger": "~0.3",
+        "exsyst/swagger": "~0.3|~0.4",
         "zircote/swagger-php": "^2.0.9",
         "phpdocumentor/reflection-docblock": "^3.1|^4.0"
     },