diff --git a/.github/workflows/comment-on-release.yml b/.github/workflows/comment-on-release.yml
index f8b1751e5..6a8dc0aaf 100644
--- a/.github/workflows/comment-on-release.yml
+++ b/.github/workflows/comment-on-release.yml
@@ -13,13 +13,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
         with:
           fetch-depth: 0
 
       - name: Get previous release
         id: previous_release
-        uses: actions/github-script@v7
+        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7.1.0
         with:
           script: |
             const currentTag = '${{ github.event.release.tag_name }}';
@@ -53,7 +53,7 @@ jobs:
 
       - name: Get merged PRs between releases
         id: get_prs
-        uses: actions/github-script@v7
+        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7.1.0
         with:
           script: |
             const currentTag = '${{ github.event.release.tag_name }}';
@@ -103,7 +103,7 @@ jobs:
             return Array.from(prNumbers);
 
       - name: Comment on PRs
-        uses: actions/github-script@v7
+        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7.1.0
         with:
           script: |
             const prNumbers = ${{ steps.get_prs.outputs.result }};
diff --git a/.github/workflows/publish-docs-manually.yml b/.github/workflows/publish-docs-manually.yml
index befe44d31..46bbe2bb5 100644
--- a/.github/workflows/publish-docs-manually.yml
+++ b/.github/workflows/publish-docs-manually.yml
@@ -9,20 +9,20 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
       - name: Configure Git Credentials
         run: |
           git config user.name github-actions[bot]
           git config user.email 41898282+github-actions[bot]@users.noreply.github.com
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v3
+        uses: astral-sh/setup-uv@caf0cab7a618c569241d31dcd442f54681755d39 # v3.2.4
         with:
           enable-cache: true
           version: 0.9.5
 
       - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
-      - uses: actions/cache@v4
+      - uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           key: mkdocs-material-${{ env.cache_id }}
           path: .cache
diff --git a/.github/workflows/publish-pypi.yml b/.github/workflows/publish-pypi.yml
index 59ede8417..8d3a2d328 100644
--- a/.github/workflows/publish-pypi.yml
+++ b/.github/workflows/publish-pypi.yml
@@ -10,10 +10,10 @@ jobs:
     runs-on: ubuntu-latest
     needs: [checks]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v3
+        uses: astral-sh/setup-uv@caf0cab7a618c569241d31dcd442f54681755d39 # v3.2.4
         with:
           enable-cache: true
           version: 0.9.5
@@ -25,7 +25,7 @@ jobs:
         run: uv build
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         with:
           name: release-dists
           path: dist/
@@ -44,13 +44,13 @@ jobs:
 
     steps:
       - name: Retrieve release distributions
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
         with:
           name: release-dists
           path: dist/
 
       - name: Publish package distributions to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # release/v1
 
   docs-publish:
     runs-on: ubuntu-latest
@@ -58,20 +58,20 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
       - name: Configure Git Credentials
         run: |
           git config user.name github-actions[bot]
           git config user.email 41898282+github-actions[bot]@users.noreply.github.com
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v3
+        uses: astral-sh/setup-uv@caf0cab7a618c569241d31dcd442f54681755d39 # v3.2.4
         with:
           enable-cache: true
           version: 0.9.5
 
       - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
-      - uses: actions/cache@v4
+      - uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           key: mkdocs-material-${{ env.cache_id }}
           path: .cache
diff --git a/.github/workflows/shared.yml b/.github/workflows/shared.yml
index 746666437..3a6f5e2ef 100644
--- a/.github/workflows/shared.yml
+++ b/.github/workflows/shared.yml
@@ -13,16 +13,16 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
 
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@61cb8a9741eeb8a550a1b8544337180c0fc8476b # v7.2.0
         with:
           enable-cache: true
           version: 0.9.5
       - name: Install dependencies
         run: uv sync --frozen --all-extras --python 3.10
 
-      - uses: pre-commit/action@v3.0.1
+      - uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd # v3.0.1
         with:
           extra_args: --all-files --verbose
         env:
@@ -44,10 +44,10 @@ jobs:
         os: [ubuntu-latest, windows-latest]
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v7
+        uses: astral-sh/setup-uv@61cb8a9741eeb8a550a1b8544337180c0fc8476b # v7.2.0
         with:
           enable-cache: true
           version: 0.9.5
@@ -65,9 +65,9 @@ jobs:
   readme-snippets:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
 
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@61cb8a9741eeb8a550a1b8544337180c0fc8476b # v7.2.0
         with:
           enable-cache: true
           version: 0.9.5