diff --git a/.github/workflows/build-swc.yml b/.github/workflows/build-swc.yml
index 64570d3b5..b8b5c0492 100644
--- a/.github/workflows/build-swc.yml
+++ b/.github/workflows/build-swc.yml
@@ -6,6 +6,9 @@ on:
       - 'tools/*'
       - 'deps/*'
 
+permissions:
+  contents: read
+
 jobs:
   build-swc:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eee156691..14c4748b6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,6 +3,9 @@ name: CI
 on:
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   commit-lint:
     name: Commit Lint