diff --git a/composer.json b/composer.json
index 71d4d94..2b71d2f 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
     "require": {
         "ext-intl": "*",
         "ext-json": "*",
-        "cebe/php-openapi": "^1.4",
+        "cebe/php-openapi": "1.4 - 1.5",
         "doctrine/persistence": "^2.0",
         "fig/http-message-util": "^1.0",
         "free-elephants/i18n": "^0.0.1",