diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b516269..0f2fb91 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,5 +1,8 @@
 name: Continuous Integration
 
+permissions:
+  contents: read
+
 on:
   push:
     branches: [main]