diff --git a/code-scanning/semgrep.yml b/code-scanning/semgrep.yml
index 827387b..f99d441 100644
--- a/code-scanning/semgrep.yml
+++ b/code-scanning/semgrep.yml
@@ -19,8 +19,14 @@ on:
   schedule:
     - cron: $cron-weekly
 
+permissions:
+  contents: read
+
 jobs:
   semgrep:
+    permissions:
+      contents: read # for actions/checkout to fetch code
+      security-events: write # for github/codeql-action/upload-sarif to upload SARIF results
     name: Scan
     runs-on: ubuntu-latest
     steps: