diff --git a/.github/workflows/build-preview.yml b/.github/workflows/build-preview.yml
index e77ed87fb2..bfe848aac7 100644
--- a/.github/workflows/build-preview.yml
+++ b/.github/workflows/build-preview.yml
@@ -5,6 +5,9 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   build-preview:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index ed22bb7298..de77dfee9a 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -5,6 +5,9 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   publish-npm:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 520e42e574..3b1cf54b4e 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -10,8 +10,15 @@ on:
   schedule:
     - cron: '0 0 * * 0'  # At 00:00 on Sunday
 
+permissions:
+  contents: read
+
 jobs:
   codeql:
+    permissions:
+      actions: read  # for github/codeql-action/init to get workflow details
+      contents: read  # for actions/checkout to fetch code
+      security-events: write  # for github/codeql-action/analyze to upload SARIF results
     runs-on: ubuntu-latest
 
     steps:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 76bb17a049..6b1da8e2af 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,6 +11,9 @@ on:
 env:
   CI: true
 
+permissions:
+  contents: read
+
 jobs:
   pretest:
     name: Pre-Test