diff --git a/composer.json b/composer.json
index b51030e..b1ec1a7 100644
--- a/composer.json
+++ b/composer.json
@@ -38,9 +38,9 @@
     "phpstan/phpstan-phpunit": "^0.9",
     "phpstan/phpstan-strict-rules": "^0.9",
     "phpunit/phpunit": "^6.0|^7.0",
-    "povils/phpmnd": "^2.0",
+    "povils/phpmnd": "^1.1",
     "roave/security-advisories": "dev-master",
-    "sebastian/phpcpd": "^4.0",
+    "sebastian/phpcpd": "^3.0|^4.0",
     "squizlabs/php_codesniffer": "^2.0"
   },
   "suggest": {