diff --git a/composer.json b/composer.json
index b07cd68..c249f0a 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
     "require": {
         "omnipay/common": "^3",
         "academe/authorizenet-objects": "^0.7",
-        "symfony/property-access": "^3.2"
+        "symfony/property-access": "^3.2 || ^4.0"
     },
     "require-dev": {
         "omnipay/tests": "^3",