diff --git a/.github/workflows/expat_config_h.yml b/.github/workflows/expat_config_h.yml
index f77e47ab..272e4b44 100644
--- a/.github/workflows/expat_config_h.yml
+++ b/.github/workflows/expat_config_h.yml
@@ -35,6 +35,9 @@ on:
   schedule:
     - cron: '0 2 * * 5'  # Every Friday at 2am
 
+permissions:
+  contents: read
+
 jobs:
   checks:
     name: Check expat_config.h.{in,cmake} for regressions