diff --git a/composer.json b/composer.json
index 84d2ee40..64d3bcf4 100644
--- a/composer.json
+++ b/composer.json
@@ -12,19 +12,19 @@
     "homepage": "https://github.com/Lullabot/amp-library",
     "require": {
         "php": ">=5.6",
-        "querypath/querypath": "^3.0.4",
         "sebastian/diff": "^1.2 || ^2 || ^3 || ^4",
         "marc1706/fast-image-size": "1.*",
         "sabberworm/php-css-parser": "^8.0.0",
         "guzzlehttp/guzzle": "~6.1",
-        "masterminds/html5": "^2.5"
+        "masterminds/html5": "^2.5",
+        "gravitypdf/querypath": "^3.2"
     },
     "autoload": {
         "classmap": ["src/Spec/validator-generated.php"],
         "psr-4": {"Lullabot\\AMP\\": "src"}
     },
     "require-dev": {
-        "phpunit/phpunit": "^5.6.3 || ^6",
+        "phpunit/phpunit": "^9.5",
         "symfony/console": "^2.7.0"
     },
     "scripts": {