diff --git a/.github/workflows/changelog.yml b/.github/workflows/changelog.yml
index 3ffdb08..b3e1f0b 100644
--- a/.github/workflows/changelog.yml
+++ b/.github/workflows/changelog.yml
@@ -4,6 +4,9 @@ on:
   pull_request:
     types: [opened, synchronize, labeled, unlabeled, reopened]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     name: Changelog Entry Check
diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index 1ad4b3a..e2a0142 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -2,6 +2,9 @@ name: Documentation Build
 
 on: [push, pull_request]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     # We want to run on external PRs, but not on our own internal PRs as they'll be run
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index b75ce2b..0a4848f 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -7,6 +7,9 @@ on:
   release:
     types: [published]
 
+permissions:
+  contents: read
+
 jobs:
   docker:
     if: github.repository == 'psf/black'
diff --git a/.github/workflows/fuzz.yml b/.github/workflows/fuzz.yml
index 8fba67a..d796fd5 100644
--- a/.github/workflows/fuzz.yml
+++ b/.github/workflows/fuzz.yml
@@ -2,6 +2,9 @@ name: Fuzz
 
 on: [push, pull_request]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     # We want to run on external PRs, but not on our own internal PRs as they'll be run
diff --git a/.github/workflows/pypi_upload.yml b/.github/workflows/pypi_upload.yml
index 9d97059..ef524a8 100644
--- a/.github/workflows/pypi_upload.yml
+++ b/.github/workflows/pypi_upload.yml
@@ -4,6 +4,9 @@ on:
   release:
     types: [published]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     name: PyPI Upload
diff --git a/.github/workflows/upload_binary.yml b/.github/workflows/upload_binary.yml
index ed8d9fd..6bb1d23 100644
--- a/.github/workflows/upload_binary.yml
+++ b/.github/workflows/upload_binary.yml
@@ -4,8 +4,13 @@ on:
   release:
     types: [published]
 
+permissions:
+  contents: read
+
 jobs:
   build:
+    permissions:
+      contents: write # for actions/upload-release-asset to upload release asset
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
diff --git a/.github/workflows/uvloop_test.yml b/.github/workflows/uvloop_test.yml
index 14b17d6..bbc3993 100644
--- a/.github/workflows/uvloop_test.yml
+++ b/.github/workflows/uvloop_test.yml
@@ -11,6 +11,9 @@ on:
       - "docs/**"
       - "*.md"
 
+permissions:
+  contents: read
+
 jobs:
   build:
     # We want to run on external PRs, but not on our own internal PRs as they'll be run