diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index d189b2a..21ff4c5 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -6,6 +6,9 @@ on:
   merge_group:
     branches:
     - main
+permissions:
+  contents: read
+
 jobs:
   rustfmt:
     name: rustfmt
diff --git a/.github/workflows/release-plz.yml b/.github/workflows/release-plz.yml
index b0b1875..7a3500f 100644
--- a/.github/workflows/release-plz.yml
+++ b/.github/workflows/release-plz.yml
@@ -6,6 +6,9 @@ on:
 concurrency:
   group: "${{ github.workflow }}"
   cancel-in-progress: true
+permissions:
+  contents: read
+
 jobs:
   release-plz:
     name: release-plz