diff --git a/.github/workflows/preview.yml b/.github/workflows/preview.yml
index 0136138..51c1ca3 100644
--- a/.github/workflows/preview.yml
+++ b/.github/workflows/preview.yml
@@ -1,6 +1,8 @@
 name: Preview
 
-on: [push, pull_request]
+on:
+  workflow_dispatch:
+  pull_request:
 
 jobs:
   format: