diff --git a/composer.json b/composer.json
index 103e3a8..19760a9 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
     "phpcompatibility/phpcompatibility-wp": "*",
     "squizlabs/php_codesniffer": "3.*",
     "wp-coding-standards/wpcs": "*",
-    "yoast/phpunit-polyfills": "^2.0",
+    "yoast/phpunit-polyfills": "^3.0",
     "dealerdirect/phpcodesniffer-composer-installer": "^1.0.0",
     "dms/phpunit-arraysubset-asserts": "^0.4.0"
   },