diff --git a/.github/workflows/continuous.yml b/.github/workflows/continuous.yml
index 75ebed04..afc01870 100644
--- a/.github/workflows/continuous.yml
+++ b/.github/workflows/continuous.yml
@@ -4,6 +4,9 @@ on:
   push:
     branches: [ "master" ]
 
+permissions:
+  contents: read
+
 jobs:
   build-ubuntu:
     runs-on: ubuntu-latest