diff --git a/composer.json b/composer.json
index 00b70c0c..c4ed8784 100644
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,8 @@
     "license": "beerware",
 
     "require": {
-        "php": ">=5.5",
+        "php": "^7.2",
+        "ext-curl": "*",
         "behat/behat": "^3.0.13",
         "friends-of-behat/mink-extension": "^2.3.1",
         "justinrainbow/json-schema": "^5.0",