diff --git a/.github/workflows/vulncheck.yml b/.github/workflows/vulncheck.yml
index db6a8b292..a65c768b0 100644
--- a/.github/workflows/vulncheck.yml
+++ b/.github/workflows/vulncheck.yml
@@ -6,6 +6,10 @@ on:
   push:
     branches:
       - master
+
+permissions:
+  contents: read # to fetch code (actions/checkout)
+
 jobs:
   vulncheck:
     name: Analysis