diff --git a/composer.json b/composer.json
index 9a4fbaf..b4758f9 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
   },
   "require-dev": {
     "phpunit/phpunit": "^7",
-    "phpspec/phpspec": "^3.0",
+    "phpspec/phpspec": "^3.0|^5.0",
     "phpmd/phpmd": "@stable",
     "squizlabs/php_codesniffer": "3.2.3"
   },