diff --git a/.github/workflows/check.yaml b/.github/workflows/check.yaml
index 2a736b4..7b27c79 100644
--- a/.github/workflows/check.yaml
+++ b/.github/workflows/check.yaml
@@ -10,6 +10,8 @@ on:
 concurrency:
   group: check-${{ github.ref }}
   cancel-in-progress: true
+permissions:
+  contents: read
 jobs:
   test:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 4da2892..88beeb0 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -2,6 +2,8 @@ name: Release to PyPI
 on:
   push:
     tags: ["*"]
+permissions:
+  contents: read
 env:
   dists-artifact-name: python-package-distributions
 jobs: