diff --git a/.github/workflows/draft-pdf.yml b/.github/workflows/draft-pdf.yml
index 1d7dc44..9af9fbc 100644
--- a/.github/workflows/draft-pdf.yml
+++ b/.github/workflows/draft-pdf.yml
@@ -1,6 +1,9 @@
 name: Draft PDF
 on: [push]
 
+permissions:
+  contents: read
+
 jobs:
   paper:
     runs-on: ubuntu-latest