diff --git a/.editorconfig b/.editorconfig
index 3601590..db0e5ef 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -10,4 +10,4 @@ insert_final_newline = true
 
 [*.py]
 indent_size = 4
-max_line_length = 100
+max_line_length = 120
diff --git a/.github/actionlint-matcher.json b/.github/actionlint-matcher.json
new file mode 100644
index 0000000..4613e16
--- /dev/null
+++ b/.github/actionlint-matcher.json
@@ -0,0 +1,17 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "actionlint",
+      "pattern": [
+        {
+          "regexp": "^(?:\\x1b\\[\\d+m)?(.+?)(?:\\x1b\\[\\d+m)*:(?:\\x1b\\[\\d+m)*(\\d+)(?:\\x1b\\[\\d+m)*:(?:\\x1b\\[\\d+m)*(\\d+)(?:\\x1b\\[\\d+m)*: (?:\\x1b\\[\\d+m)*(.+?)(?:\\x1b\\[\\d+m)* \\[(.+?)\\]$",
+          "file": 1,
+          "line": 2,
+          "column": 3,
+          "message": 4,
+          "code": 5
+        }
+      ]
+    }
+  ]
+}
diff --git a/.github/workflows/close-inactive-issues.yaml b/.github/workflows/close-inactive-issues.yaml
index 33bb665..7833b21 100644
--- a/.github/workflows/close-inactive-issues.yaml
+++ b/.github/workflows/close-inactive-issues.yaml
@@ -11,7 +11,7 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/stale@v5
+      - uses: actions/stale@v9
         with:
           days-before-issue-stale: 90 # The number of days old an issue can be before marking it stale
           days-before-issue-close: 14 # The number of days to wait to close an issue after it being marked stale
diff --git a/.github/workflows/codeql-analysis.yaml b/.github/workflows/codeql-analysis.yaml
index 84d7dfa..edc6f63 100644
--- a/.github/workflows/codeql-analysis.yaml
+++ b/.github/workflows/codeql-analysis.yaml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 6cdc63f..0137f48 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -6,7 +6,7 @@ on:
 
 jobs:
   tests:
-    uses: ./.github/workflows/test.yml
+    uses: ./.github/workflows/test.yaml
 
   publish-to-pypi:
     name: Publish to PyPI
@@ -20,13 +20,13 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install poetry
         run: pipx install poetry
 
       - name: Setup Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.10'
 
@@ -44,7 +44,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Check package version matches tag
         id: check-version
@@ -70,7 +70,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -78,7 +78,7 @@ jobs:
         run: pipx install poetry
 
       - name: Setup Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.10'
 #          cache: 'poetry'
diff --git a/.github/workflows/secret-scanning.yaml b/.github/workflows/secret-scanning.yaml
index 2a06946..0aa7785 100644
--- a/.github/workflows/secret-scanning.yaml
+++ b/.github/workflows/secret-scanning.yaml
@@ -13,3 +13,5 @@ jobs:
           fetch-depth: 0
       - name: Secret Scanning
         uses: trufflesecurity/trufflehog@main
+        with:
+          extra_args: --results=verified,unknown
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 29a9cef..9445be6 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -17,12 +17,12 @@ jobs:
         os: [ 'ubuntu-latest' ]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install poetry
         run: pipx install poetry
 
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 #          cache: 'poetry'
diff --git a/.github/workflows/workflow-lint.yaml b/.github/workflows/workflow-lint.yaml
new file mode 100644
index 0000000..adbcd1d
--- /dev/null
+++ b/.github/workflows/workflow-lint.yaml
@@ -0,0 +1,17 @@
+name: Lint GitHub Actions workflows
+on: [ push, pull_request ]
+
+jobs:
+  actionlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Enable matcher for actionlint
+        run: echo "::add-matcher::.github/actionlint-matcher.json"
+
+      - name: Download and run actionlint
+        run: |
+          bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)
+          ./actionlint -color
+        shell: bash
diff --git a/.yamllint.yaml b/.yamllint.yaml
new file mode 100644
index 0000000..f800e59
--- /dev/null
+++ b/.yamllint.yaml
@@ -0,0 +1,6 @@
+# yamllint configuration file: https://yamllint.readthedocs.io/
+extends: relaxed
+
+rules:
+  line-length: disable
+
diff --git a/Makefile b/Makefile
index 520ac78..a0b81b4 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,6 @@
 # Directories
 SRC_PATHS := project_name/ test/  # TODO
+YAML_PATHS := .github/
 
 # Targets
 .PHONY: help
@@ -9,6 +10,7 @@ help:
 	@echo "  format           : Format code using Ruff format"
 	@echo "  check_format     : Check code formatting with Ruff format"
 	@echo "  ruff             : Run Ruff linter"
+	@echo "  yamllint         : Run yamllint linter"
 	@echo "  pylint           : Run Pylint linter"
 	@echo "  mypy             : Run MyPy static type checker"
 	@echo "  lint             : Run linters (Ruff, Pylint and Mypy)"
@@ -36,6 +38,11 @@ ruff:
 	@echo "=====> Running Ruff..."
 	@poetry run ruff check $(SRC_PATHS)
 
+.PHONY: yamllint
+yamllint:
+	@echo "=====> Running yamllint..."
+	@poetry run yamllint $(YAML_PATHS)
+
 .PHONY: pylint
 pylint:
 	@echo "=====> Running Pylint..."
@@ -47,7 +54,7 @@ mypy:
 	@poetry run mypy $(SRC_PATHS)
 
 .PHONY: lint
-lint: ruff pylint mypy
+lint: ruff yamllint pylint mypy
 
 .PHONY: test
 test:
diff --git a/pyproject.toml b/pyproject.toml
index aa22781..233a097 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,11 +13,12 @@ pytest = "*"
 
 [tool.poetry.group.dev.dependencies]
 mypy = "*"
-ruff = "*"
 pylint = "*"
+ruff = "*"
+yamllint = "*"
 
 [tool.ruff]
-line-length = 100
+line-length = 120
 target-version = "py310"
 
 [tool.ruff.lint]
@@ -67,7 +68,7 @@ unfixable = []
 line-ending = "lf"
 
 [tool.pylint.format]
-max-line-length = 100
+max-line-length = 120
 
 [tool.pylint.basic]
 no-docstring-rgx = "^__|^test_"