diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fce1b1c..ad156f0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: read
+
 jobs:
   build:
     name: 🧪 Test & lint
diff --git a/.github/workflows/initiate_release.yml b/.github/workflows/initiate_release.yml
index ec6d37d..bff268e 100644
--- 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.yml b/.github/workflows/release.yml
index 7ea13d1..fc0da13 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -6,6 +6,10 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+  pull-requests: read
+
 jobs:
   Release:
     name: 🚀 Release
diff --git a/.github/workflows/scheduled_test.yml b/.github/workflows/scheduled_test.yml
index af915fc..350f0c3 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