diff --git a/composer.json b/composer.json
index 55bd95ad..88e9c74e 100644
--- a/composer.json
+++ b/composer.json
@@ -16,6 +16,10 @@
 		"phpunit/phpunit": "7.*"
 	},
 
+	"conflict": {
+		"phpgt/dom": "*"
+	},
+
 	"license": "MIT",
 
 	"authors": [
diff --git a/composer.lock b/composer.lock
index 540cce07..bc9f6dfc 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "560e75e062a6b17e0c2dad3c53dc41dd",
+    "content-hash": "8effdf357d4806e9f4f171d456633866",
     "packages": [
         {
             "name": "magento/cssxpath",