diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e2c2b0fe..3fb54119 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -31,13 +31,15 @@ jobs:
             target: ppc64le
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - uses: actions/setup-python@v5
         with:
           python-version: 3.x
 
       - name: Build wheels
-        uses: PyO3/maturin-action@v1
+        uses: PyO3/maturin-action@aef21716ff3dcae8a1c301d23ec3e4446972a6e3  # v1.49.1
         with:
           target: ${{ matrix.platform.target }}
           args: --release --out dist --find-interpreter --features extension-module
@@ -65,13 +67,15 @@ jobs:
             target: armv7
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - uses: actions/setup-python@v5
         with:
           python-version: 3.x
 
       - name: Build wheels
-        uses: PyO3/maturin-action@v1
+        uses: PyO3/maturin-action@aef21716ff3dcae8a1c301d23ec3e4446972a6e3  # v1.49.1
         with:
           target: ${{ matrix.platform.target }}
           args: --release --out dist --find-interpreter --features extension-module
@@ -94,6 +98,8 @@ jobs:
             target: x86
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - uses: actions/setup-python@v5
         with:
@@ -101,7 +107,7 @@ jobs:
           architecture: ${{ matrix.platform.target }}
 
       - name: Build wheels
-        uses: PyO3/maturin-action@v1
+        uses: PyO3/maturin-action@aef21716ff3dcae8a1c301d23ec3e4446972a6e3  # v1.49.1
         with:
           target: ${{ matrix.platform.target }}
           args: --release --out dist --find-interpreter --features extension-module
@@ -124,13 +130,15 @@ jobs:
             target: aarch64
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - uses: actions/setup-python@v5
         with:
           python-version: 3.x
 
       - name: Build wheels
-        uses: PyO3/maturin-action@v1
+        uses: PyO3/maturin-action@aef21716ff3dcae8a1c301d23ec3e4446972a6e3  # v1.49.1
         with:
           target: ${{ matrix.platform.target }}
           args: --release --out dist --find-interpreter --features extension-module
@@ -146,9 +154,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Build sdist
-        uses: PyO3/maturin-action@v1
+        uses: PyO3/maturin-action@aef21716ff3dcae8a1c301d23ec3e4446972a6e3  # v1.49.1
         with:
           command: sdist
           args: --out dist
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 50475769..15b1e1bb 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -23,9 +23,11 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@6b9c6063abd6010835644d4c2e1bef4cf5cd0fca  # v6.0.1
         with:
           enable-cache: true
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index a4a6623a..8b46a98c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -50,7 +50,7 @@ jobs:
           subject-path: "wheels-*/*"
 
       - name: Publish to PyPI
-        uses: PyO3/maturin-action@v1
+        uses: PyO3/maturin-action@aef21716ff3dcae8a1c301d23ec3e4446972a6e3  # v1.49.1
         with:
           command: upload
           args: --non-interactive --skip-existing wheels-*/*
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8b144a43..fb97ceed 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -26,22 +26,30 @@ env:
   FORCE_COLOR: "1"
   PYTHONUNBUFFERED: "1"
 
+permissions: {}
+
 jobs:
   generate-matrix:
     runs-on: ubuntu-latest
     outputs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
+    permissions:
+      contents: read
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@6b9c6063abd6010835644d4c2e1bef4cf5cd0fca  # v6.0.1
         with:
           enable-cache: true
 
       - id: set-matrix
+        env:
+          OS: ${{ inputs.os }}
         run: |
-          uv run noxfile.py --session gha_matrix -- "${{ inputs.os }}"
+          uv run noxfile.py --session gha_matrix -- "${OS}"
 
   test:
     name: Python ${{ matrix.python-version }}, Django ${{ matrix.django-version }} (${{ matrix.os }})
@@ -50,17 +58,24 @@ jobs:
     strategy:
       fail-fast: false
       matrix: ${{ fromJSON(needs.generate-matrix.outputs.matrix) }}
+    permissions:
+      contents: read
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@6b9c6063abd6010835644d4c2e1bef4cf5cd0fca  # v6.0.1
         with:
           enable-cache: true
 
       - name: Run tests
+        env:
+          DJANGO_VERSION: ${{ matrix.django-version }}
+          PYTHON_VERSION: ${{ matrix.python-version }}
         run: |
-          uv run noxfile.py --session "tests(python='${{ matrix.python-version }}', django='${{ matrix.django-version }}')"
+          uv run noxfile.py --session "tests(python='${PYTHON_VERSION}', django='${DJANGO_VERSION}')"
 
   tests:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
new file mode 100644
index 00000000..3295fd3d
--- /dev/null
+++ b/.github/workflows/zizmor.yml
@@ -0,0 +1,36 @@
+name: zizmor 🌈
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: ["*"]
+
+jobs:
+  zizmor:
+    name: zizmor latest via PyPI
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+      contents: read # only needed for private repos
+      actions: read # only needed for private repos
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@c7f87aa956e4c323abf06d5dec078e358f6b4d04
+        with:
+          enable-cache: true
+
+      - 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
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 7d8b417c..369a4b94 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -17,6 +17,10 @@ repos:
       - id: trailing-whitespace
       - id: no-commit-to-branch
         args: ["--branch", "main"]
+  - repo: https://github.com/woodruffw/zizmor-pre-commit
+    rev: v1.6.0
+    hooks:
+    - id: zizmor
   - repo: local
     hooks:
       - id: fmt