diff --git a/composer.json b/composer.json
index 06815a846..8d678a7c0 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
     },
 
     "require-dev": {
-        "phpspec/phpspec": "^3.2",
+        "phpspec/phpspec": "^2.5 || ^3.2 || ^4.0 || ^5.0 || ^6.0",
         "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.5 || ^7.1"
     },