diff --git a/db/migrations/20230923020649_add_tests_table.php b/db/migrations/20230923020649_add_tests_table.php
index 03a947c..b08be03 100644
--- a/db/migrations/20230923020649_add_tests_table.php
+++ b/db/migrations/20230923020649_add_tests_table.php
@@ -13,6 +13,14 @@ final class AddTestsTable extends AbstractMigration {
       ->addForeignKey('component_id', 'components', 'id', ['delete'=> 'CASCADE', 'update'=> 'CASCADE'])
       ->addTimestamps()
       ->create();
+
+    // many-to-many relationship with benchmarks
+    $table = $this->table('tests_benchmarks');
+      ->addColumn('component_id', 'integer', ['null' => false])
+      ->addColumn('benchmark_id', 'integer', ['null' => false])
+      ->addForeignKey('component_id', 'components', 'id', ['delete'=> 'CASCADE', 'update'=> 'CASCADE'])
+      ->addForeignKey('benchmark_id', 'benchmarks', 'id', ['delete'=> 'CASCADE', 'update'=> 'CASCADE'])
+      ->create();
   }
 
 }