diff --git a/.github/workflows/py-checks.yml b/.github/workflows/py-checks.yml
index 211502c..a7bf7a0 100644
--- a/.github/workflows/py-checks.yml
+++ b/.github/workflows/py-checks.yml
@@ -13,6 +13,8 @@ jobs:
     steps:
     - name: Checkout working copy
       uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - name: ruff check
       uses: chartboost/ruff-action@v1
       with:
diff --git a/.github/workflows/py-tests.yml b/.github/workflows/py-tests.yml
index d868cf7..0979362 100644
--- a/.github/workflows/py-tests.yml
+++ b/.github/workflows/py-tests.yml
@@ -19,6 +19,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
@@ -79,6 +81,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           submodules: true
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
diff --git a/.github/workflows/pyo3-wheels.yml b/.github/workflows/pyo3-wheels.yml
index 45b4bb2..d38c867 100644
--- a/.github/workflows/pyo3-wheels.yml
+++ b/.github/workflows/pyo3-wheels.yml
@@ -57,6 +57,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
@@ -79,6 +81,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - name: Build sdist
         uses: PyO3/maturin-action@v1
         with:
@@ -140,6 +144,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: true
+          persist-credentials: false
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 3589ea5..63e54d1 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -13,6 +13,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - run: cargo fmt --check
     - if: always()
       run: cargo clippy
@@ -24,6 +26,7 @@ jobs:
     - uses: actions/checkout@v4
       with:
         submodules: true
+        persist-credentials: false
     - run: cargo check
     - run: cargo test -r --verbose
 
@@ -35,5 +38,6 @@ jobs:
     - uses: actions/checkout@v4
       with:
         submodules: true
+        persist-credentials: false
     - run: cargo update --verbose
     - run: cargo test -r --verbose
diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
new file mode 100644
index 0000000..ad51ede
--- /dev/null
+++ b/.github/workflows/zizmor.yml
@@ -0,0 +1,29 @@
+name: Zizmor
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  zizmor:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      security-events: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@v4
+      - name: Run zizmor
+        run: uvx zizmor --format sarif . > results.sarif
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Upload SARIF file
+        uses: github/codeql-action/upload-sarif@v3
+        with:
+          sarif_file: results.sarif
+          category: zizmor