diff --git a/.github/workflows/run-notebooks.yml b/.github/workflows/run-notebooks.yml
index 9886f84..b354a47 100644
--- a/.github/workflows/run-notebooks.yml
+++ b/.github/workflows/run-notebooks.yml
@@ -7,6 +7,9 @@ on:
     branches: [ main ]
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   run-notebooks:
     runs-on: ubuntu-latest