diff --git a/tests/FunctionalTest.php b/tests/FunctionalTest.php
index dffaeac..7d78cbc 100644
--- a/tests/FunctionalTest.php
+++ b/tests/FunctionalTest.php
@@ -50,7 +50,7 @@ protected function setUp(): void
             new Postgres(
                 new PgClient(
                     [
-                        'host' => 'localhost',
+                        'host' => 'postgres',
                         'port' => 55432,
                         'user'     => 'postgres',
                         'password' => 'postgres',