diff --git a/composer.lock b/composer.lock
index 053f9da8..10d0e1ce 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4050,16 +4050,16 @@
         },
         {
             "name": "wp-phpunit/wp-phpunit",
-            "version": "6.4.2",
+            "version": "6.5.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/wp-phpunit/wp-phpunit.git",
-                "reference": "aa3c8f5d1b7efc295fd2b37c7264d2356a8c1099"
+                "reference": "ef2cb44c0d991ac0c3a7a3ed0d2d1cf3fe8d8f2f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/wp-phpunit/wp-phpunit/zipball/aa3c8f5d1b7efc295fd2b37c7264d2356a8c1099",
-                "reference": "aa3c8f5d1b7efc295fd2b37c7264d2356a8c1099",
+                "url": "https://api.github.com/repos/wp-phpunit/wp-phpunit/zipball/ef2cb44c0d991ac0c3a7a3ed0d2d1cf3fe8d8f2f",
+                "reference": "ef2cb44c0d991ac0c3a7a3ed0d2d1cf3fe8d8f2f",
                 "shasum": ""
             },
             "type": "library",
@@ -4094,7 +4094,7 @@
                 "issues": "https://github.com/wp-phpunit/issues",
                 "source": "https://github.com/wp-phpunit/wp-phpunit"
             },
-            "time": "2023-12-07T00:50:08+00:00"
+            "time": "2024-05-07T16:46:52+00:00"
         },
         {
             "name": "yoast/phpunit-polyfills",