diff --git a/.github/workflows/check-python-task.yml b/.github/workflows/check-python-task.yml
index 1dc0313e..b1adb31d 100644
--- a/.github/workflows/check-python-task.yml
+++ b/.github/workflows/check-python-task.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-python-task.md
 name: Check Python
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -73,7 +69,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
@@ -104,7 +100,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
diff --git a/.github/workflows/check-yaml-task.yml b/.github/workflows/check-yaml-task.yml
index 9f580dfd..72a6ea0a 100644
--- a/.github/workflows/check-yaml-task.yml
+++ b/.github/workflows/check-yaml-task.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-yaml-task.md
 name: Check YAML
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -101,7 +97,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
diff --git a/.github/workflows/spell-check-task.yml b/.github/workflows/spell-check-task.yml
index e00c3088..e9edba9f 100644
--- a/.github/workflows/spell-check-task.yml
+++ b/.github/workflows/spell-check-task.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/spell-check-task.md
 name: Spell Check
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -55,7 +51,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
diff --git a/.github/workflows/test-python-poetry-task.yml b/.github/workflows/test-python-poetry-task.yml
index a39925e3..f34c8ced 100644
--- a/.github/workflows/test-python-poetry-task.yml
+++ b/.github/workflows/test-python-poetry-task.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/test-python-poetry-task.md
 name: Test Python
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -69,7 +65,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
diff --git a/docs/development.md b/docs/development.md
index 78580b2f..158cd3cd 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -9,8 +9,7 @@ The following development tools must be available in your local environment:
 - [**Node.js** / **npm**](https://nodejs.org/en/download/) - Node.js dependencies management tool
   - The **Node.js** version in use is defined by the `engines.node` key of [`package.json`](../package.json).
 - [**Python**](https://wiki.python.org/moin/BeginnersGuide/Download)
-  - <!-- PYTHON_VERSION -->
-    This project uses Python 3.9.x
+  - The **Python** version in use is defined by the `tool.poetry.dependencies.python` key of [`pyproject.toml`](../pyproject.toml).
 - [**Poetry**](https://python-poetry.org/docs/#installation) - Python dependencies management tool
 - [**Task**](https://taskfile.dev/installation/) - task runner tool
 
diff --git a/poetry.lock b/poetry.lock
index 0368e29f..119afbce 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -100,7 +100,6 @@ description = "Backport of PEP 654 (exception groups)"
 optional = false
 python-versions = ">=3.7"
 groups = ["dev"]
-markers = "python_version < \"3.11\""
 files = [
     {file = "exceptiongroup-1.3.0-py3-none-any.whl", hash = "sha256:4d111e6e0c13d0644cad6ddaa7ed0261a0b36971f6d23e7ec9b4b9097da78a10"},
     {file = "exceptiongroup-1.3.0.tar.gz", hash = "sha256:b241f5885f560bc56a59ee63ca4c6a8bfa46ae4ad651af316d4e81817bb9fd88"},
@@ -391,7 +390,6 @@ description = "A lil' TOML parser"
 optional = false
 python-versions = ">=3.7"
 groups = ["dev"]
-markers = "python_version < \"3.11\""
 files = [
     {file = "tomli-2.0.0-py3-none-any.whl", hash = "sha256:b5bde28da1fed24b9bd1d4d2b8cba62300bfb4ec9a6187a957e8ddb9434c5224"},
     {file = "tomli-2.0.0.tar.gz", hash = "sha256:c292c34f58502a1eb2bbb9f5bbc9a5ebc37bee10ffb8c2d6bbdfa8eb13cc14e1"},
@@ -404,7 +402,6 @@ description = "Backported and Experimental Type Hints for Python 3.8+"
 optional = false
 python-versions = ">=3.8"
 groups = ["dev"]
-markers = "python_version < \"3.11\""
 files = [
     {file = "typing_extensions-4.8.0-py3-none-any.whl", hash = "sha256:8f92fc8806f9a6b641eaa5318da32b44d401efaac0f6678c9bc448ba3605faa0"},
     {file = "typing_extensions-4.8.0.tar.gz", hash = "sha256:df8e4339e9cb77357558cbdbceca33c303714cf861d1eef15e1070055ae8b7ef"},
@@ -431,5 +428,5 @@ dev = ["doc8", "flake8", "flake8-import-order", "rstcheck[sphinx]", "sphinx"]
 
 [metadata]
 lock-version = "2.1"
-python-versions = "^3.9"
-content-hash = "d683b916a87ca20107ddb69a05b8e5d78a2dbbb8e342aae955e8ed1bbdfaabdc"
+python-versions = "~3.9"
+content-hash = "41464f92abb16591cbdd69caa9b4528d1758922ed2c104e6b0b239f60ecab8b3"
diff --git a/pyproject.toml b/pyproject.toml
index 6150bfeb..192dfe05 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ description = ""
 authors = ["Arduino <info@arduino.cc>"]
 
 [tool.poetry.dependencies]
-python = "^3.9"
+python = "~3.9"
 
 [tool.poetry.dev-dependencies]
 yamllint = "^v1.37.1"
diff --git a/workflow-templates/check-mkdocs-task.yml b/workflow-templates/check-mkdocs-task.yml
index 67efa465..f8590c48 100644
--- a/workflow-templates/check-mkdocs-task.yml
+++ b/workflow-templates/check-mkdocs-task.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-mkdocs-task.md
 name: Check Website
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -69,7 +65,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
diff --git a/workflow-templates/check-python-task.yml b/workflow-templates/check-python-task.yml
index 1dc0313e..b1adb31d 100644
--- a/workflow-templates/check-python-task.yml
+++ b/workflow-templates/check-python-task.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-python-task.md
 name: Check Python
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -73,7 +69,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
@@ -104,7 +100,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
diff --git a/workflow-templates/check-yaml-task.yml b/workflow-templates/check-yaml-task.yml
index 9f580dfd..72a6ea0a 100644
--- a/workflow-templates/check-yaml-task.yml
+++ b/workflow-templates/check-yaml-task.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-yaml-task.md
 name: Check YAML
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -101,7 +97,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
diff --git a/workflow-templates/deploy-cobra-mkdocs-versioned-poetry.yml b/workflow-templates/deploy-cobra-mkdocs-versioned-poetry.yml
index 433a6052..5e024b08 100644
--- a/workflow-templates/deploy-cobra-mkdocs-versioned-poetry.yml
+++ b/workflow-templates/deploy-cobra-mkdocs-versioned-poetry.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/deploy-cobra-mkdocs-versioned-poetry.md
 name: Deploy Website
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 on:
   push:
     branches:
@@ -70,7 +66,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: |
diff --git a/workflow-templates/deploy-mkdocs-poetry.yml b/workflow-templates/deploy-mkdocs-poetry.yml
index bca5a027..1c691c18 100644
--- a/workflow-templates/deploy-mkdocs-poetry.yml
+++ b/workflow-templates/deploy-mkdocs-poetry.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/deploy-mkdocs-poetry.md
 name: Deploy Website
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   push:
@@ -33,7 +29,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
diff --git a/workflow-templates/deploy-mkdocs-versioned-poetry.yml b/workflow-templates/deploy-mkdocs-versioned-poetry.yml
index 76664ef1..9ff19787 100644
--- a/workflow-templates/deploy-mkdocs-versioned-poetry.yml
+++ b/workflow-templates/deploy-mkdocs-versioned-poetry.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/deploy-mkdocs-versioned-poetry.md
 name: Deploy Website
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 on:
   push:
     branches:
@@ -60,7 +56,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: |
diff --git a/workflow-templates/spell-check-task.yml b/workflow-templates/spell-check-task.yml
index e00c3088..e9edba9f 100644
--- a/workflow-templates/spell-check-task.yml
+++ b/workflow-templates/spell-check-task.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/spell-check-task.md
 name: Spell Check
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -55,7 +51,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
diff --git a/workflow-templates/test-go-integration-task.yml b/workflow-templates/test-go-integration-task.yml
index c61e8456..c7ca4609 100644
--- a/workflow-templates/test-go-integration-task.yml
+++ b/workflow-templates/test-go-integration-task.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/test-go-integration-task.md
 name: Test Integration
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -86,7 +82,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry
diff --git a/workflow-templates/test-python-poetry-task.yml b/workflow-templates/test-python-poetry-task.yml
index a39925e3..f34c8ced 100644
--- a/workflow-templates/test-python-poetry-task.yml
+++ b/workflow-templates/test-python-poetry-task.yml
@@ -1,10 +1,6 @@
 # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/test-python-poetry-task.md
 name: Test Python
 
-env:
-  # See: https://github.com/actions/setup-python/tree/main#available-versions-of-python
-  PYTHON_VERSION: "3.9"
-
 # See: https://docs.github.com/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows
 on:
   create:
@@ -69,7 +65,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version-file: pyproject.toml
 
       - name: Install Poetry
         run: pip install poetry