diff --git a/composer.json b/composer.json
index 7f119db26..e686b3fed 100644
--- a/composer.json
+++ b/composer.json
@@ -70,7 +70,7 @@
     "roave/security-advisories": "dev-latest",
     "newfold-labs/wp-php-standards": "^1.2.3",
     "wp-cli/i18n-command": "^2.6.1",
-    "wp-phpunit/wp-phpunit": "^6.5.3"
+    "wp-phpunit/wp-phpunit": "^6.5.4"
   },
   "require": {
     "newfold-labs/wp-module-activation": "^1.0.2",
diff --git a/composer.lock b/composer.lock
index 510ba5148..f09429fb4 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": "932c3e84a9f7f0dcc6745e01cd48ffc7",
+    "content-hash": "bff863049268bf3bf84c3ea8da5e294c",
     "packages": [
         {
             "name": "doctrine/inflector",
@@ -4142,7 +4142,7 @@
         },
         {
             "name": "wp-phpunit/wp-phpunit",
-            "version": "6.5.3",
+            "version": "6.5.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/wp-phpunit/wp-phpunit.git",