diff --git a/.github/workflows/invalid_question.yml b/.github/workflows/invalid_question.yml
index 868bcc34..327a70f6 100644
--- a/.github/workflows/invalid_question.yml
+++ b/.github/workflows/invalid_question.yml
@@ -3,8 +3,14 @@ on:
   schedule:
   - cron: "*/10 * * * *"
 
+permissions:
+  contents: read
+
 jobs:
   stale:
+    permissions:
+      issues: write  # for actions/stale to close stale issues
+      pull-requests: write  # for actions/stale to close stale PRs
     runs-on: ubuntu-latest
     env:
       ACTIONS_STEP_DEBUG: true
diff --git a/.github/workflows/missing_playground.yml b/.github/workflows/missing_playground.yml
index 3efc90f7..15d3850f 100644
--- a/.github/workflows/missing_playground.yml
+++ b/.github/workflows/missing_playground.yml
@@ -3,8 +3,14 @@ on:
   schedule:
   - cron: "*/10 * * * *"
 
+permissions:
+  contents: read
+
 jobs:
   stale:
+    permissions:
+      issues: write  # for actions/stale to close stale issues
+      pull-requests: write  # for actions/stale to close stale PRs
     runs-on: ubuntu-latest
     env:
       ACTIONS_STEP_DEBUG: true
diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index e0be186f..c5e0d7ab 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -3,8 +3,14 @@ on:
   schedule:
   - cron: "0 2 * * *"
 
+permissions:
+  contents: read
+
 jobs:
   stale:
+    permissions:
+      issues: write  # for actions/stale to close stale issues
+      pull-requests: write  # for actions/stale to close stale PRs
     runs-on: ubuntu-latest
     env:
       ACTIONS_STEP_DEBUG: true
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8194e609..8bfb2332 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -8,6 +8,9 @@ on:
     branches-ignore:
       - 'gh-pages'
 
+permissions:
+  contents: read
+
 jobs:
   # Label of the container job
   sqlite: