diff --git a/.github/workflows/dispatch-ci.yml b/.github/workflows/dispatch-ci.yml
index 13a8979d..c131d51c 100644
--- a/.github/workflows/dispatch-ci.yml
+++ b/.github/workflows/dispatch-ci.yml
@@ -1,9 +1,11 @@
 name: Dispatch CI
 
 on:
-  # At 12:30 PM UTC, only on Sunday and Monday
+  # At 12:00 PM UTC, only on Thursday and Friday
   schedule:
-    - cron: '30 12 * * 0,1'
+    - cron: '0 12 * * 4,5'
+
+permissions: {}
 
 jobs:
   dispatch-ci:
@@ -11,6 +13,9 @@ jobs:
     # Only run cron on the symbiote account
     if: (github.event_name == 'schedule' && github.repository_owner == 'symbiote') || (github.event_name != 'schedule')
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      actions: write
     steps:
       - name: Dispatch CI
         uses: silverstripe/gha-dispatch-ci@v1
diff --git a/.github/workflows/keepalive.yml b/.github/workflows/keepalive.yml
index cc581960..89388650 100644
--- a/.github/workflows/keepalive.yml
+++ b/.github/workflows/keepalive.yml
@@ -1,17 +1,21 @@
 name: Keepalive
 
 on:
-  # At 11:55 AM UTC, on day 16 of the month
+  # At 12:00 PM UTC, on day 5 of the month
   schedule:
-    - cron: '55 11 16 * *'
+    - cron: '0 12 5 * *'
   workflow_dispatch:
 
+permissions: {}
+
 jobs:
   keepalive:
     name: Keepalive
     # Only run cron on the symbiote account
     if: (github.event_name == 'schedule' && github.repository_owner == 'symbiote') || (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 029cda9d..6d9c95a9 100644
--- a/.github/workflows/merge-up.yml
+++ b/.github/workflows/merge-up.yml
@@ -1,17 +1,22 @@
 name: Merge-up
 
 on:
-  # At 12:30 PM UTC, only on Thursday
+  # At 12:00 PM UTC, only on Monday
   schedule:
-    - cron: '30 12 * * 4'
+    - cron: '0 12 * * 1'
   workflow_dispatch:
 
+permissions: {}
+
 jobs:
   merge-up:
     name: Merge-up
     # Only run cron on the symbiote account
     if: (github.event_name == 'schedule' && github.repository_owner == 'symbiote') || (github.event_name != 'schedule')
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      actions: write
     steps:
       - name: Merge-up
         uses: silverstripe/gha-merge-up@v1