diff --git a/.github/workflows/ci-bionic.yml b/.github/workflows/ci-bionic.yml
index 4718f34f0..a8df52549 100644
--- a/.github/workflows/ci-bionic.yml
+++ b/.github/workflows/ci-bionic.yml
@@ -7,6 +7,9 @@ on:
   pull_request:
     branches: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     defaults:
diff --git a/.github/workflows/ci-bullseye.yml b/.github/workflows/ci-bullseye.yml
index 3d34e77ff..eb0b7a7ce 100644
--- a/.github/workflows/ci-bullseye.yml
+++ b/.github/workflows/ci-bullseye.yml
@@ -7,6 +7,9 @@ on:
   pull_request:
     branches: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     defaults:
diff --git a/.github/workflows/ci-buster.yml b/.github/workflows/ci-buster.yml
index 66f263835..af7e7f94a 100644
--- a/.github/workflows/ci-buster.yml
+++ b/.github/workflows/ci-buster.yml
@@ -7,6 +7,9 @@ on:
   pull_request:
     branches: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     defaults:
diff --git a/.github/workflows/ci-centos-7.yml b/.github/workflows/ci-centos-7.yml
index 986b7815b..1b3566685 100644
--- a/.github/workflows/ci-centos-7.yml
+++ b/.github/workflows/ci-centos-7.yml
@@ -7,6 +7,9 @@ on:
   pull_request:
     branches: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     strategy:
diff --git a/.github/workflows/ci-centos-8.yml b/.github/workflows/ci-centos-8.yml
index 8ad222793..68e8c4284 100644
--- a/.github/workflows/ci-centos-8.yml
+++ b/.github/workflows/ci-centos-8.yml
@@ -7,6 +7,9 @@ on:
   pull_request:
     branches: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     strategy:
diff --git a/.github/workflows/ci-eslint.yml b/.github/workflows/ci-eslint.yml
index dce24c367..d8ba1c49f 100644
--- a/.github/workflows/ci-eslint.yml
+++ b/.github/workflows/ci-eslint.yml
@@ -7,6 +7,9 @@ on:
   pull_request:
     branches: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   eslint:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/ci-stretch.yml b/.github/workflows/ci-stretch.yml
index 8e30da10a..2849aa1c9 100644
--- a/.github/workflows/ci-stretch.yml
+++ b/.github/workflows/ci-stretch.yml
@@ -7,6 +7,9 @@ on:
   pull_request:
     branches: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     defaults:
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 1de9e3bc9..5a8cfa099 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -14,8 +14,15 @@ on:
   schedule:
     - cron: '0 3 * * 5'
 
+permissions:
+  contents: read
+
 jobs:
   analyze:
+    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/autobuild to send a status report
     name: Analyze
     runs-on: ubuntu-latest