diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 92e860cb547..626824f3830 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -33,6 +33,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: Set up Python
       uses: actions/setup-python@v5
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index cc4760288e5..8e789a73489 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -21,6 +21,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: pre-commit cache
       uses: actions/cache@v4
diff --git a/.github/workflows/test-cygwin.yml b/.github/workflows/test-cygwin.yml
index 0aa79e4235a..656054e8924 100644
--- a/.github/workflows/test-cygwin.yml
+++ b/.github/workflows/test-cygwin.yml
@@ -48,6 +48,8 @@ jobs:
 
       - name: Checkout Pillow
         uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Install Cygwin
         uses: cygwin/cygwin-install-action@v4
diff --git a/.github/workflows/test-docker.yml b/.github/workflows/test-docker.yml
index 101807745e5..03608319a60 100644
--- a/.github/workflows/test-docker.yml
+++ b/.github/workflows/test-docker.yml
@@ -65,6 +65,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: Build system information
       run: python3 .github/workflows/system-info.py
diff --git a/.github/workflows/test-mingw.yml b/.github/workflows/test-mingw.yml
index c7a73439ca9..bfd393db5a2 100644
--- a/.github/workflows/test-mingw.yml
+++ b/.github/workflows/test-mingw.yml
@@ -46,6 +46,8 @@ jobs:
     steps:
       - name: Checkout Pillow
         uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Set up shell
         run: echo "C:\msys64\usr\bin\" >> $env:GITHUB_PATH
diff --git a/.github/workflows/test-valgrind.yml b/.github/workflows/test-valgrind.yml
index 63aec586b79..8818b3b2357 100644
--- a/.github/workflows/test-valgrind.yml
+++ b/.github/workflows/test-valgrind.yml
@@ -40,6 +40,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: Build system information
       run: python3 .github/workflows/system-info.py
diff --git a/.github/workflows/test-windows.yml b/.github/workflows/test-windows.yml
index f6d0aeb1d4a..c1ba52719ae 100644
--- a/.github/workflows/test-windows.yml
+++ b/.github/workflows/test-windows.yml
@@ -44,16 +44,20 @@ jobs:
     steps:
     - name: Checkout Pillow
       uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: Checkout cached dependencies
       uses: actions/checkout@v4
       with:
+        persist-credentials: false
         repository: python-pillow/pillow-depends
         path: winbuild\depends
 
     - name: Checkout extra test images
       uses: actions/checkout@v4
       with:
+        persist-credentials: false
         repository: python-pillow/test-images
         path: Tests\test-images
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 29949f4e0ab..87acd7ddbc0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -63,6 +63,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index 34452fa563c..45f18634100 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -61,6 +61,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
+          persist-credentials: false
           submodules: true
 
       - uses: actions/setup-python@v5
@@ -132,6 +133,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
+          persist-credentials: false
           submodules: true
 
       - uses: actions/setup-python@v5
@@ -173,10 +175,13 @@ jobs:
           - cibw_arch: ARM64
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Checkout extra test images
         uses: actions/checkout@v4
         with:
+          persist-credentials: false
           repository: python-pillow/test-images
           path: Tests\test-images
 
@@ -253,6 +258,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: Set up Python
       uses: actions/setup-python@v5