diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index cf3000a..6243201 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -9,6 +9,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: read
+  pull-requests: read
+
 jobs:
   test-build:
     name: 👷 Test & Build
diff --git a/.github/workflows/initiate_release.yml b/.github/workflows/initiate_release.yml
index 6dc7b49..3c8aa06 100644
--- a/.github/workflows/initiate_release.yml
+++ b/.github/workflows/initiate_release.yml
@@ -7,6 +7,10 @@ on:
         description: "The new version number with 'v' prefix. Example: v1.40.1"
         required: true
 
+permissions:
+  contents: write
+  pull-requests: write
+
 jobs:
   init_release:
     name: 🚀 Create release PR
diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index b7370e5..5d76fb6 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -6,6 +6,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: read
+  pull-requests: read
+
 jobs:
   lint:
     name: 👮 Lint
diff --git a/.github/workflows/reviewdog.yaml b/.github/workflows/reviewdog.yaml
index 255573f..229f8e7 100644
--- a/.github/workflows/reviewdog.yaml
+++ b/.github/workflows/reviewdog.yaml
@@ -6,6 +6,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: read
+  pull-requests: read
+
 jobs:
   reviewdog:
     name: 🐶 Reviewdog