diff --git a/composer.json b/composer.json
index 674fd2c..9c76358 100644
--- a/composer.json
+++ b/composer.json
@@ -6,12 +6,13 @@
     "minimum-stability": "dev",
     "prefer-stable": true,
     "require": {
+        "php": ">=7.1",
         "mofodojodino/profanity-filter": "^1.3",
         "byjoby/flatrr": "dev-master"
     },
     "require-dev": {
-        "phpunit/phpunit": "^6.5",
-        "phpunit/dbunit": "^3"
+        "phpunit/phpunit": "^7",
+        "phpunit/dbunit": "^4"
     },
     "scripts": {
         "test": [