diff --git a/code-scanning/pmd.yml b/code-scanning/pmd.yml
index 0bc512c..a1e32c4 100644
--- a/code-scanning/pmd.yml
+++ b/code-scanning/pmd.yml
@@ -13,8 +13,14 @@ on:
   schedule:
     - cron: $cron-weekly
 
+permissions:
+  contents: read
+
 jobs:
   pmd-code-scan:
+    permissions:
+      contents: read # for actions/checkout to fetch code
+      security-events: write # for github/codeql-action/upload-sarif to upload SARIF results
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3