diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index be25973..ac52e9b 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -8,6 +8,9 @@ on:  # yamllint disable-line rule:truthy
     branches:
       - master
 
+permissions:
+  contents: read
+
 jobs:
   lint:
     name: Linters