diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2fb9b06f..b61e5e45 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,11 +14,11 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5
         with:
           python-version: "3.12"
-      - uses: pre-commit/action@v3.0.1
+      - uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd # v3.0.1
 
   # Make sure commit messages follow the conventional commits convention:
   # https://www.conventionalcommits.org
@@ -26,10 +26,10 @@ jobs:
     name: Lint Commit Messages
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
         with:
           fetch-depth: 0
-      - uses: wagoid/commitlint-github-action@v6
+      - uses: wagoid/commitlint-github-action@b948419dd99f3fd78a6548d48f94e3df7f6bf3ed # v6
 
   test:
     strategy:
@@ -65,11 +65,11 @@ jobs:
             python-version: "pypy-3.10"
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
       - name: Install poetry
         run: pipx install poetry
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5
         with:
           python-version: ${{ matrix.python-version }}
           cache: "poetry"
@@ -87,25 +87,25 @@ jobs:
       - name: Test with Pytest
         run: poetry run pytest --durations=20 --timeout=60 -v --cov=zeroconf --cov-branch --cov-report xml --cov-report html --cov-report term-missing tests
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@0565863a31f2c772f9f0395002a31e3f06189574 # v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
 
   benchmark:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
       - name: Setup Python 3.13
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5
         with:
           python-version: 3.13
-      - uses: snok/install-poetry@v1.4.1
+      - uses: snok/install-poetry@76e04a911780d5b312d89783f7b1cd627778900a # v1.4.1
       - name: Install Dependencies
         run: |
           REQUIRE_CYTHON=1 poetry install --only=main,dev
         shell: bash
       - name: Run benchmarks
-        uses: CodSpeedHQ/action@v3
+        uses: CodSpeedHQ/action@0010eb0ca6e89b80c88e8edaaa07cfe5f3e6664d # v3
         with:
           token: ${{ secrets.CODSPEED_TOKEN }}
           run: poetry run pytest --no-cov -vvvvv --codspeed tests/benchmarks
@@ -128,32 +128,32 @@ jobs:
       newest_release_tag: ${{ steps.release.outputs.tag }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
         with:
           fetch-depth: 0
           ref: ${{ github.head_ref || github.ref_name }}
 
       # Do a dry run of PSR
       - name: Test release
-        uses: python-semantic-release/python-semantic-release@v9.21.0
+        uses: python-semantic-release/python-semantic-release@26bb37cfab71a5a372e3db0f48a6eac57519a4a6 # v9.21.0
         if: github.ref_name != 'master'
         with:
           root_options: --noop
 
       # On main branch: actual PSR + upload to PyPI & GitHub
       - name: Release
-        uses: python-semantic-release/python-semantic-release@v9.21.0
+        uses: python-semantic-release/python-semantic-release@26bb37cfab71a5a372e3db0f48a6eac57519a4a6 # v9.21.0
         id: release
         if: github.ref_name == 'master'
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Publish package distributions to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@76f52bc884231f62b9a034ebfe128415bbaabdfc # release/v1
         if: steps.release.outputs.released == 'true'
 
       - name: Publish package distributions to GitHub Releases
-        uses: python-semantic-release/upload-to-gh-release@main
+        uses: python-semantic-release/upload-to-gh-release@0a92b5d7ebfc15a84f9801ebd1bf706343d43711 # main
         if: steps.release.outputs.released == 'true'
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
@@ -228,18 +228,18 @@ jobs:
             pyver: cp313
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
         with:
           fetch-depth: 0
           ref: "master"
       # Used to host cibuildwheel
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5
         with:
           python-version: "3.12"
       - name: Set up QEMU
         if: ${{ matrix.qemu }}
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@29109295f81e9208d7d86ff1c6c12d2833863392 # v3
         with:
           platforms: all
           # This should be temporary
@@ -262,20 +262,20 @@ jobs:
             echo "CIBW_BUILD=${{ matrix.pyver }}*" >> $GITHUB_ENV
           fi
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
         with:
           ref: ${{ needs.release.outputs.newest_release_tag }}
           fetch-depth: 0
 
       - name: Build wheels ${{ matrix.musl }} (${{ matrix.qemu }})
-        uses: pypa/cibuildwheel@v2.23.0
+        uses: pypa/cibuildwheel@6cccd09a31908ffd175b012fb8bf4e1dbda3bc6c # v2.23.0
         # to supply options, put them in 'env', like:
         env:
           CIBW_SKIP: cp36-* cp37-* pp36-* pp37-* pp38-* cp38-* ${{ matrix.musl == 'musllinux' && '*manylinux*' || '*musllinux*' }}
           CIBW_BEFORE_ALL_LINUX: apt install -y gcc || yum install -y gcc || apk add gcc
           REQUIRE_CYTHON: 1
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
           path: ./wheelhouse/*.whl
           name: wheels-${{ matrix.os }}-${{ matrix.musl }}-${{ matrix.qemu }}-${{ matrix.pyver }}
@@ -288,7 +288,7 @@ jobs:
       id-token: write # IMPORTANT: this permission is mandatory for trusted publishing
 
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@95815c38cf2ff2164869cbab79da8d1f422bc89e # v4
         with:
           # unpacks default artifact into dist/
           # if `name: artifact` is omitted, the action will create extra parent dir
@@ -297,6 +297,4 @@ jobs:
           merge-multiple: true
 
       - uses:
-          pypa/gh-action-pypi-publish@v1.12.4
-
-          # To test: repository_url: https://test.pypi.org/legacy/
+          pypa/gh-action-pypi-publish@76f52bc884231f62b9a034ebfe128415bbaabdfc # v1.12.4