diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 3110b29d..867d7308 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -10,13 +10,13 @@ on:
   push:
     branches: ["main"]
     paths-ignore: [
-      "**/*.rst", "**/*.txt", "**/.flake8", "**/.gitignore", "**/.*rc", "**/*.cfg", "**/*.toml", "lib/cli_command_parser/__version__.py"
+      "**/*.rst", "**/*.txt", "**/.md", "**/.gitignore", "**/.*rc", "**/*.cfg", "**/*.toml", ".*.ya?ml", "lib/cli_command_parser/__version__.py"
     ]
   pull_request:
     # The branches below must be a subset of the branches above
     branches: ["main"]
     paths-ignore: [
-      "**/*.rst", "**/*.txt", "**/.flake8", "**/.gitignore", "**/.*rc", "**/*.cfg", "**/*.toml", "lib/cli_command_parser/__version__.py"
+      "**/*.rst", "**/*.txt", "**/.md", "**/.gitignore", "**/.*rc", "**/*.cfg", "**/*.toml", ".*.ya?ml", "lib/cli_command_parser/__version__.py"
     ]
   schedule:
     - cron: '29 17 * * 4'
@@ -35,10 +35,10 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5.3.0
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -52,7 +52,7 @@ jobs:
           echo "CODEQL_PYTHON=$(which python)" >> $GITHUB_ENV
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
+        uses: github/codeql-action/init@df409f7d9260372bd5f19e5b04e83cb3c43714ae # v3.27.9
         with:
           languages: ${{ matrix.language }}
           setup-python-dependencies: false
@@ -65,4 +65,4 @@ jobs:
           # queries: security-extended,security-and-quality
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v3
+        uses: github/codeql-action/analyze@df409f7d9260372bd5f19e5b04e83cb3c43714ae # v3.27.9
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 3b111658..ab90e5bf 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -13,9 +13,9 @@ jobs:
       matrix:
         python-version: ["3.12"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5.3.0
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
@@ -25,7 +25,7 @@ jobs:
       - name: Generate docs
         run: python bin/build_docs.py -cu
       - name: GitHub Pages action
-        uses: peaceiris/actions-gh-pages@v4
+        uses: peaceiris/actions-gh-pages@4f9cc6602d3f66b9c108549d475ec49e8ef4d45e # v4.0.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./docs/
diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 7305c206..729e3d11 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -23,9 +23,9 @@ jobs:
           sudo apt-get update
           sudo apt install locales -y
           sudo locale-gen en_US.UTF-8 fr_FR.UTF-8 ko_KR.UTF-8
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5.3.0
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
@@ -42,7 +42,7 @@ jobs:
       - name: Generate coverage report
         run: pytest --cov-branch --cov=./lib/ --cov-report=xml
       - name: Upload coverage report to Codecov
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@7f8b4b4bde536c465e797be725718b88c5d95e0e # v5.1.1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           directory: ./coverage/reports/