diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d3433295..0f705df2 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -6,6 +6,11 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref }}
   cancel-in-progress: true
 
+permissions:
+  actions: write
+  contents: read
+  pull-requests: read
+
 jobs:
   basic:
     name: 🧪 Run tests
diff --git a/.github/workflows/initiate_release.yml b/.github/workflows/initiate_release.yml
index 275b4784..2f1562ec 100755
--- a/.github/workflows/initiate_release.yml
+++ b/.github/workflows/initiate_release.yml
@@ -7,6 +7,10 @@ on:
         description: 'The new version number. Example: 1.40.1'
         required: true
 
+permissions:
+  contents: write
+  pull-requests: write
+
 jobs:
   init_release:
     name: 🚀 Create release PR
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 99c4e39f..e5ededcc 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -6,6 +6,10 @@ on:
     branches:
       - master
 
+permissions:
+  contents: read
+  pull-requests: read
+
 jobs:
   Release:
     name: 🚀 Release
diff --git a/.github/workflows/reviewdog.yml b/.github/workflows/reviewdog.yml
index 0bf6ad9e..99b71a07 100644
--- a/.github/workflows/reviewdog.yml
+++ b/.github/workflows/reviewdog.yml
@@ -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
diff --git a/.github/workflows/scheduled_test.yml b/.github/workflows/scheduled_test.yml
index d9526bf4..51aea651 100644
--- a/.github/workflows/scheduled_test.yml
+++ b/.github/workflows/scheduled_test.yml
@@ -6,6 +6,10 @@ on:
     # Monday at 9:00 UTC
     - cron: "0 9 * * 1"
 
+permissions:
+  contents: read
+  pull-requests: write
+
 jobs:
   test:
     runs-on: ubuntu-latest