diff --git a/.github/workflows/proof-of-conan.yml b/.github/workflows/proof-of-conan.yml
index ef2082f..a9b7c39 100644
--- a/.github/workflows/proof-of-conan.yml
+++ b/.github/workflows/proof-of-conan.yml
@@ -16,6 +16,9 @@ on:
         required: true
         description: 'JSON of all your targets'
 
+permissions:
+  contents: read
+
 jobs:
   checkout:
     runs-on: ubuntu-latest