diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 0a27281..a09be80 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [ "3.9", "3.10", "3.11", "3.12", "3.13" , "3.14" ]
+        python-version: [ "3.10", "3.11", "3.12", "3.13" , "3.14" ]
     steps:
       - uses: actions/checkout@v6
       - name: Setup Python
diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index cc80384..daae30f 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [ "3.9", "3.10", "3.11", "3.12", "3.13" , "3.14" ]
+        python-version: [ "3.10", "3.11", "3.12", "3.13" , "3.14" ]
     env:
       PYTHONUTF8: "1"
       PYTHONPATH: ${{ github.workspace }}/service
diff --git a/README.de.md b/README.de.md
index f51bfb7..9748317 100644
--- a/README.de.md
+++ b/README.de.md
@@ -7,7 +7,7 @@ lang: de
 
 # [Standard Python Environment](https://github.com/europanite/standard_python_environment "Standard Python Environment")
 
-[![Python](https://img.shields.io/badge/python-3.9|%203.10%20|%203.11|%203.12|%203.13-blue)](https://www.python.org/)
+[![Python](https://img.shields.io/badge/python-3.10%20|%203.11|%203.12|%203.13|%203.14-blue)](https://www.python.org/)
 ![OS](https://img.shields.io/badge/OS-Linux%20%7C%20macOS%20%7C%20Windows-blue)
 
 [![CI](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml/badge.svg)](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml)
diff --git a/README.es.md b/README.es.md
index 2791027..b00dde7 100644
--- a/README.es.md
+++ b/README.es.md
@@ -7,7 +7,7 @@ lang: es
 
 # [Standard Python Environment](https://github.com/europanite/standard_python_environment "Standard Python Environment")
 
-[![Python](https://img.shields.io/badge/python-3.9|%203.10%20|%203.11|%203.12|%203.13-blue)](https://www.python.org/)
+[![Python](https://img.shields.io/badge/python-3.10%20|%203.11|%203.12|%203.13|%203.14-blue)](https://www.python.org/)
 ![OS](https://img.shields.io/badge/OS-Linux%20%7C%20macOS%20%7C%20Windows-blue)
 
 [![CI](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml/badge.svg)](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml)
diff --git a/README.fr.md b/README.fr.md
index 63ec526..f5898eb 100644
--- a/README.fr.md
+++ b/README.fr.md
@@ -7,7 +7,7 @@ lang: fr
 
 # [Standard Python Environment](https://github.com/europanite/standard_python_environment "Standard Python Environment")
 
-[![Python](https://img.shields.io/badge/python-3.9|%203.10%20|%203.11|%203.12|%203.13-blue)](https://www.python.org/)
+[![Python](https://img.shields.io/badge/python-3.10%20|%203.11|%203.12|%203.13|%203.14-blue)](https://www.python.org/)
 ![OS](https://img.shields.io/badge/OS-Linux%20%7C%20macOS%20%7C%20Windows-blue)
 
 [![CI](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml/badge.svg)](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml)
diff --git a/README.hi.md b/README.hi.md
index 1dab3b6..192bd53 100644
--- a/README.hi.md
+++ b/README.hi.md
@@ -7,7 +7,7 @@ lang: hi
 
 # [Standard Python Environment](https://github.com/europanite/standard_python_environment "Standard Python Environment")
 
-[![Python](https://img.shields.io/badge/python-3.9|%203.10%20|%203.11|%203.12|%203.13-blue)](https://www.python.org/)
+[![Python](https://img.shields.io/badge/python-3.10%20|%203.11|%203.12|%203.13|%203.14-blue)](https://www.python.org/)
 ![OS](https://img.shields.io/badge/OS-Linux%20%7C%20macOS%20%7C%20Windows-blue)
 
 [![CI](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml/badge.svg)](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml)
diff --git a/README.ja.md b/README.ja.md
index f86c33e..872188d 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -7,7 +7,7 @@ lang: ja
 
 # [Standard Python Environment](https://github.com/europanite/standard_python_environment "Standard Python Environment")
 
-[![Python](https://img.shields.io/badge/python-3.9|%203.10%20|%203.11|%203.12|%203.13-blue)](https://www.python.org/)
+[![Python](https://img.shields.io/badge/python-3.10%20|%203.11|%203.12|%203.13|%203.14-blue)](https://www.python.org/)
 ![OS](https://img.shields.io/badge/OS-Linux%20%7C%20macOS%20%7C%20Windows-blue)
 
 [![CI](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml/badge.svg)](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml)
diff --git a/README.ko.md b/README.ko.md
index 0129e50..4177a41 100644
--- a/README.ko.md
+++ b/README.ko.md
@@ -7,7 +7,7 @@ lang: ko
 
 # [Standard Python Environment](https://github.com/europanite/standard_python_environment "Standard Python Environment")
 
-[![Python](https://img.shields.io/badge/python-3.9|%203.10%20|%203.11|%203.12|%203.13-blue)](https://www.python.org/)
+[![Python](https://img.shields.io/badge/python-3.10%20|%203.11|%203.12|%203.13|%203.14-blue)](https://www.python.org/)
 ![OS](https://img.shields.io/badge/OS-Linux%20%7C%20macOS%20%7C%20Windows-blue)
 
 [![CI](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml/badge.svg)](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml)
diff --git a/README.md b/README.md
index 4dc25ec..43109b7 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ lang: en
 # [Standard Python Environment](https://github.com/europanite/standard_python_environment "Standard Python Environment")
 
 [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
-[![Python](https://img.shields.io/badge/python-3.9|%203.10%20|%203.11|%203.12|%203.13-blue)](https://www.python.org/)
+[![Python](https://img.shields.io/badge/python-3.10%20|%203.11|%203.12|%203.13|%203.14-blue)](https://www.python.org/)
 ![OS](https://img.shields.io/badge/OS-Linux%20%7C%20macOS%20%7C%20Windows-blue)
 
 [![CI](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml/badge.svg)](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml)
diff --git a/README.pt-BR.md b/README.pt-BR.md
index faace0a..46609f8 100644
--- a/README.pt-BR.md
+++ b/README.pt-BR.md
@@ -5,7 +5,9 @@ permalink: /pt-BR/
 lang: pt-BR
 ---
 
-[![Python](https://img.shields.io/badge/python-3.9|%203.10%20|%203.11|%203.12|%203.13-blue)](https://www.python.org/)
+# [Standard Python Environment](https://github.com/europanite/standard_python_environment "Standard Python Environment")
+
+[![Python](https://img.shields.io/badge/python-3.10%20|%203.11|%203.12|%203.13|%203.14-blue)](https://www.python.org/)
 ![OS](https://img.shields.io/badge/OS-Linux%20%7C%20macOS%20%7C%20Windows-blue)
 
 [![CI](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml/badge.svg)](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml)
diff --git a/README.zh-CN.md b/README.zh-CN.md
index ed02c8c..2e308e8 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -7,7 +7,7 @@ lang: zh-CN
 
 # [Standard Python Environment](https://github.com/europanite/standard_python_environment "Standard Python Environment")
 
-[![Python](https://img.shields.io/badge/python-3.9|%203.10%20|%203.11|%203.12|%203.13-blue)](https://www.python.org/)
+[![Python](https://img.shields.io/badge/python-3.10%20|%203.11|%203.12|%203.13|%203.14-blue)](https://www.python.org/)
 ![OS](https://img.shields.io/badge/OS-Linux%20%7C%20macOS%20%7C%20Windows-blue)
 
 [![CI](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml/badge.svg)](https://github.com/europanite/standard_python_environment/actions/workflows/ci.yml)
diff --git a/service/pyproject.toml b/service/pyproject.toml
index 54f91e4..b604451 100644
--- a/service/pyproject.toml
+++ b/service/pyproject.toml
@@ -22,7 +22,7 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "standard_python_environment"
 version = "0.0.0"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 
 [tool.setuptools]
 packages = ["app", "data"]
\ No newline at end of file
diff --git a/service/requirements.test.txt b/service/requirements.test.txt
index a46403e..bfc9473 100644
--- a/service/requirements.test.txt
+++ b/service/requirements.test.txt
@@ -1,5 +1,5 @@
 # write required libraries.
 -r requirements.txt
-pytest==8.4.2
-pytest-cov==7.0.0
-ruff==0.14.8
+pytest==9.1.1
+pytest-cov==7.1.0
+ruff==0.15.22
diff --git a/service/requirements.txt b/service/requirements.txt
index ac9db3b..eeb8bbe 100644
--- a/service/requirements.txt
+++ b/service/requirements.txt
@@ -1,2 +1,2 @@
 # write required libraries.
-jupyterlab==4.5.0
+jupyterlab==4.6.1