diff --git a/.github/workflows/preview.yml b/.github/workflows/preview.yml
index de25299f..5c5a2d0c 100644
--- a/.github/workflows/preview.yml
+++ b/.github/workflows/preview.yml
@@ -1,7 +1,7 @@
 name: Deploy PR previews
 
 on:
-  pull_request:
+  pull_request_target:
     types:
       - opened
       - synchronize
@@ -10,6 +10,10 @@ on:
 
 concurrency: preview-${{ github.ref }}
 
+permissions:
+  contents: write
+  pull-requests: write
+
 defaults:
   run:
     shell: bash