diff --git a/.github/workflows/GnuTests.yml b/.github/workflows/GnuTests.yml
index d306092c6..7bc0f26d4 100644
--- a/.github/workflows/GnuTests.yml
+++ b/.github/workflows/GnuTests.yml
@@ -8,6 +8,10 @@ on: [push, pull_request]
 
 jobs:
   gnu:
+    permissions:
+      actions: read  # for dawidd6/action-download-artifact to query and download artifacts
+      contents: read  # for actions/checkout to fetch code
+      pull-requests: read  # for dawidd6/action-download-artifact to query commit hash
     name: Run GNU tests
     runs-on: ubuntu-latest
     steps: