diff --git a/includes/cli-server/router.php b/includes/cli-server/router.php
index 9a8648a5b..43b38258b 100644
--- a/includes/cli-server/router.php
+++ b/includes/cli-server/router.php
@@ -9,6 +9,18 @@
 
 define('DB_ENGINE', getenv('DB_ENGINE') ?: 'mysql');
 
+// Add a unique request ID to the headers.
+$requestId             = md5( microtime() );
+$_SERVER['REQUEST_ID'] = $requestId;
+header( 'X-Request-ID: ' . $requestId );
+
+// Disable the MU upgrade routine.
+global $wp_filter;
+$wp_filter['do_mu_upgrade'][10][] = [
+    'accepted_args' => 0,
+    'function'      => '__return_false'
+];
+
 if ( file_exists( $root.$path ) ) {
 
 	// Enforces trailing slash, keeping links tidy in the admin