diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 8caa14ee89..17aaa42042 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -4,6 +4,9 @@ name: Build and Test
 
 on: [push, pull_request]
 
+permissions:
+  contents: read #  to fetch code (actions/checkout)
+
 jobs:
   ci:
     runs-on: ${{ matrix.operating-system }}