diff --git a/.github/workflows/valid-xml.yml b/.github/workflows/valid-xml.yml
index 2dcdec14..f9c0356e 100644
--- a/.github/workflows/valid-xml.yml
+++ b/.github/workflows/valid-xml.yml
@@ -35,6 +35,9 @@ on:
   schedule:
     - cron: '0 2 * * 5'  # Every Friday at 2am
 
+permissions:
+  contents: read
+
 jobs:
   checks:
     name: Ensure well-formed and valid XML