diff --git a/.github/workflows/auto-tag.yml b/.github/workflows/auto-tag.yml
index 32801df..8d7002f 100644
--- a/.github/workflows/auto-tag.yml
+++ b/.github/workflows/auto-tag.yml
@@ -4,10 +4,15 @@ on:
     tags:
       - '*.*.*'
   workflow_dispatch:
+
+permissions: {}
+
 jobs:
   auto-tag:
     name: Auto-tag
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
     steps:
       - name: Auto-tag
         uses: silverstripe/gha-auto-tag@v1
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b6c5082..bf64b09 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -47,6 +47,8 @@ on:
         default: false
         description: Whether tests in the vendor folder should be preserved.
 
+permissions: {}
+
 jobs:
 
   # Writes various github variables to the console for debugging purposes
@@ -981,6 +983,8 @@ jobs:
     runs-on: ubuntu-latest
     needs: gaugerelease
     if: ${{ needs.gaugerelease.outputs.do_release == '1' }}
+    permissions:
+      contents: write
     steps:
       - name: Patch release
         uses: silverstripe/gha-tag-release@v1
diff --git a/.github/workflows/keepalive.yml b/.github/workflows/keepalive.yml
index b2337b7..53ac732 100644
--- a/.github/workflows/keepalive.yml
+++ b/.github/workflows/keepalive.yml
@@ -6,12 +6,16 @@ on:
     - cron: '0 0 5 * *'
   workflow_dispatch:
 
+permissions: {}
+
 jobs:
   keepalive:
     name: Keepalive
     # Only run cron on the silverstripe account
     if: (github.event_name == 'schedule' && github.repository_owner == 'silverstripe') || (github.event_name != 'schedule')
     runs-on: ubuntu-latest
+    permissions:
+      actions: write
     steps:
       - name: Keepalive
         uses: silverstripe/gha-keepalive@v1
diff --git a/.github/workflows/merge-up.yml b/.github/workflows/merge-up.yml
index 9ff1d3b..adf0121 100644
--- a/.github/workflows/merge-up.yml
+++ b/.github/workflows/merge-up.yml
@@ -6,12 +6,17 @@ on:
     - cron: '0 0 * * 4'
   workflow_dispatch:
 
+permissions: {}
+
 jobs:
   merge-up:
     name: Merge-up
     # Only run cron on the silverstripe account
     if: (github.event_name == 'schedule' && github.repository_owner == 'silverstripe') || (github.event_name != 'schedule')
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      actions: write
     steps:
       - name: Merge-up
         uses: silverstripe/gha-merge-up@v1