diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 025892aa3..2cc244801 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -15,9 +15,9 @@ jobs:
         os: [ ubuntu-latest, macos-latest, windows-latest ]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v7.0.0
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Set up Python
-        uses: actions/setup-python@v7.0.0
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: ${{ matrix.python }}
 
@@ -60,7 +60,7 @@ jobs:
         if: matrix.os == 'ubuntu-latest'
 
       - name: Store coverage report
-        uses: actions/upload-artifact@v7.0.1
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         if: matrix.os == 'ubuntu-latest'
         with:
           name: coverage-${{ matrix.python }}
@@ -74,9 +74,9 @@ jobs:
         os: [ ubuntu-latest, macos-latest, windows-latest ]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v7.0.0
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Set up Python
-        uses: actions/setup-python@v7.0.0
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.11"
 
@@ -109,12 +109,12 @@ jobs:
     needs: test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v7.0.0
-      - uses: actions/setup-python@v7
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7
         with:
           python-version: "3.12"
       - name: Download coverage reports
-        uses: actions/download-artifact@v8.0.1
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           merge-multiple: true
 
@@ -139,7 +139,7 @@ jobs:
           .venv/bin/python -m coverage report --fail-under=100
 
       - name: Upload HTML report if check failed.
-        uses: actions/upload-artifact@v7.0.1
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: html-report
           path: htmlcov
@@ -159,9 +159,9 @@ jobs:
         ports:
           - "3000:3000"
     steps:
-      - uses: actions/checkout@v7.0.0
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Set up Python
-        uses: actions/setup-python@v7.0.0
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.11"
       - name: Get Python Version
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index a805f6ee2..10f7d55c7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,12 +12,12 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/checkout@v7.0.0
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Install Hatchling
         run: pip install --upgrade hatchling
       - name: Build
         run: hatchling build
       - name: Push to PyPI
-        uses: pypa/gh-action-pypi-publish@v1.14.1
+        uses: pypa/gh-action-pypi-publish@ba38be9e461d3875417946c167d0b5f3d385a247 # v1.14.1
         with:
             attestations: true