diff --git a/.copier-answers.yml b/.copier-answers.yml
index e3c05fd..463ca8a 100644
--- a/.copier-answers.yml
+++ b/.copier-answers.yml
@@ -1,5 +1,5 @@
 # Changes here will be overwritten by Copier
-_commit: 9c45cb7
+_commit: c761526
 _src_path: git@github.com:inokufu/python-project-template.git
 author_email: contact@inokufu.com
 author_name: Inokufu
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a961fc8..d7b03ac 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -3,7 +3,7 @@
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
       - id: check-added-large-files
       - id: check-builtin-literals
@@ -22,7 +22,7 @@ repos:
       - id: name-tests-test
 
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.20.0
+    rev: v3.21.0
     hooks:
       - id: pyupgrade
         args: [ --py312-plus ]
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 4d39d35..06ff631 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -5,6 +5,21 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.2.1] - 2025-10-17
+
+### Changed
+
+- Upgrade dependencies
+
+
+## [0.2.0] - 2025-07-17
+
+### Changed
+
+- Python version to 3.13
+- Upgrade dependencies
+
+
 ## [0.1.0] - 2025-03-20
 
 ### Added
@@ -18,10 +33,3 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Type-safe configuration with validation
 - Helper methods for environment checking
 
-
-## [0.2.0] - 2025-07-17
-
-### Changed
-
-- Python version to 3.13
-- Upgrade dependencies
diff --git a/pyproject.toml b/pyproject.toml
index f66e153..162b58d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,16 +1,16 @@
 [project]
 name = "configcore"
-version = "0.2.0"
+version = "0.2.1"
 description = "A flexible, type-safe configuration management library for Python applications."
 authors = [
   { name = "Inokufu", email = "contact@inokufu.com" }
 ]
 dependencies = [
     "mkdocs~=1.6.1",
-    "mkdocstrings-python~=1.16.12",
-    "mkdocs-material~=9.6.14",
-    "griffe-inherited-docstrings~=1.1.1",
-    "pydantic-settings~=2.10.1",
+    "mkdocstrings-python~=1.18.2",
+    "mkdocs-material~=9.6.22",
+    "griffe-inherited-docstrings~=1.1.2",
+    "pydantic-settings~=2.11.0",
 ]
 readme = "docs/README.md"
 requires-python = ">= 3.13"
@@ -20,11 +20,11 @@ requires-python = ">= 3.13"
 [tool.rye]
 managed = true
 dev-dependencies = [
-    "diff-cover~=9.4.1",
-    "pre-commit~=4.2.0",
-    "pytest~=8.4.1",
-    "pytest-mock~=3.14.1",
-    "pytest-cov~=6.2.1",
+    "diff-cover~=9.7.1",
+    "pre-commit~=4.3.0",
+    "pytest~=8.4.2",
+    "pytest-mock~=3.15.1",
+    "pytest-cov~=7.0.0",
 ]
 
 [tool.ruff]
@@ -66,6 +66,7 @@ pythonpath = [".", "src"]
 addopts = "--cov=src --cov-report=term --cov-report=xml"
 
 [tool.coverage.report]
-exclude_lines = [
-  "@abstractmethod"
+exclude_also = [
+  "@abstractmethod",
+  "if TYPE_CHECKING:",
 ]
diff --git a/requirements-dev.lock b/requirements-dev.lock
index 0600948..10ead55 100644
--- a/requirements-dev.lock
+++ b/requirements-dev.lock
@@ -16,36 +16,36 @@ babel==2.17.0
     # via mkdocs-material
 backrefs==5.9
     # via mkdocs-material
-certifi==2025.6.15
+certifi==2025.10.5
     # via requests
 cfgv==3.4.0
     # via pre-commit
 chardet==5.2.0
     # via diff-cover
-charset-normalizer==3.4.2
+charset-normalizer==3.4.4
     # via requests
-click==8.2.1
+click==8.3.0
     # via mkdocs
 colorama==0.4.6
     # via griffe
     # via mkdocs-material
-coverage==7.9.2
+coverage==7.11.0
     # via pytest-cov
-diff-cover==9.4.1
-distlib==0.3.9
+diff-cover==9.7.1
+distlib==0.4.0
     # via virtualenv
-filelock==3.18.0
+filelock==3.20.0
     # via virtualenv
 ghp-import==2.1.0
     # via mkdocs
-griffe==1.7.3
+griffe==1.14.0
     # via griffe-inherited-docstrings
     # via mkdocstrings-python
-griffe-inherited-docstrings==1.1.1
+griffe-inherited-docstrings==1.1.2
     # via configcore
-identify==2.6.12
+identify==2.6.15
     # via pre-commit
-idna==3.10
+idna==3.11
     # via requests
 iniconfig==2.1.0
     # via pytest
@@ -54,13 +54,13 @@ jinja2==3.1.6
     # via mkdocs
     # via mkdocs-material
     # via mkdocstrings
-markdown==3.8.2
+markdown==3.9
     # via mkdocs
     # via mkdocs-autorefs
     # via mkdocs-material
     # via mkdocstrings
     # via pymdown-extensions
-markupsafe==3.0.2
+markupsafe==3.0.3
     # via jinja2
     # via mkdocs
     # via mkdocs-autorefs
@@ -73,18 +73,18 @@ mkdocs==1.6.1
     # via mkdocs-autorefs
     # via mkdocs-material
     # via mkdocstrings
-mkdocs-autorefs==1.4.2
+mkdocs-autorefs==1.4.3
     # via mkdocstrings
     # via mkdocstrings-python
 mkdocs-get-deps==0.2.0
     # via mkdocs
-mkdocs-material==9.6.15
+mkdocs-material==9.6.22
     # via configcore
 mkdocs-material-extensions==1.3.1
     # via mkdocs-material
-mkdocstrings==0.29.1
+mkdocstrings==0.30.1
     # via mkdocstrings-python
-mkdocstrings-python==1.16.12
+mkdocstrings-python==1.18.2
     # via configcore
 nodeenv==1.9.1
     # via pre-commit
@@ -95,37 +95,37 @@ paginate==0.5.7
     # via mkdocs-material
 pathspec==0.12.1
     # via mkdocs
-platformdirs==4.3.8
+platformdirs==4.5.0
     # via mkdocs-get-deps
     # via virtualenv
 pluggy==1.6.0
     # via diff-cover
     # via pytest
     # via pytest-cov
-pre-commit==4.2.0
-pydantic==2.11.7
+pre-commit==4.3.0
+pydantic==2.12.2
     # via pydantic-settings
-pydantic-core==2.33.2
+pydantic-core==2.41.4
     # via pydantic
-pydantic-settings==2.10.1
+pydantic-settings==2.11.0
     # via configcore
 pygments==2.19.2
     # via diff-cover
     # via mkdocs-material
     # via pytest
-pymdown-extensions==10.16
+pymdown-extensions==10.16.1
     # via mkdocs-material
     # via mkdocstrings
-pytest==8.4.1
+pytest==8.4.2
     # via pytest-cov
     # via pytest-mock
-pytest-cov==6.2.1
-pytest-mock==3.14.1
+pytest-cov==7.0.0
+pytest-mock==3.15.1
 python-dateutil==2.9.0.post0
     # via ghp-import
 python-dotenv==1.1.1
     # via pydantic-settings
-pyyaml==6.0.2
+pyyaml==6.0.3
     # via mkdocs
     # via mkdocs-get-deps
     # via pre-commit
@@ -133,20 +133,20 @@ pyyaml==6.0.2
     # via pyyaml-env-tag
 pyyaml-env-tag==1.1
     # via mkdocs
-requests==2.32.4
+requests==2.32.5
     # via mkdocs-material
 six==1.17.0
     # via python-dateutil
-typing-extensions==4.14.0
+typing-extensions==4.15.0
     # via pydantic
     # via pydantic-core
     # via typing-inspection
-typing-inspection==0.4.1
+typing-inspection==0.4.2
     # via pydantic
     # via pydantic-settings
 urllib3==2.5.0
     # via requests
-virtualenv==20.31.2
+virtualenv==20.35.3
     # via pre-commit
 watchdog==6.0.0
     # via mkdocs
diff --git a/requirements.lock b/requirements.lock
index e394e42..5957504 100644
--- a/requirements.lock
+++ b/requirements.lock
@@ -16,35 +16,35 @@ babel==2.17.0
     # via mkdocs-material
 backrefs==5.9
     # via mkdocs-material
-certifi==2025.6.15
+certifi==2025.10.5
     # via requests
-charset-normalizer==3.4.2
+charset-normalizer==3.4.4
     # via requests
-click==8.2.1
+click==8.3.0
     # via mkdocs
 colorama==0.4.6
     # via griffe
     # via mkdocs-material
 ghp-import==2.1.0
     # via mkdocs
-griffe==1.7.3
+griffe==1.14.0
     # via griffe-inherited-docstrings
     # via mkdocstrings-python
-griffe-inherited-docstrings==1.1.1
+griffe-inherited-docstrings==1.1.2
     # via configcore
-idna==3.10
+idna==3.11
     # via requests
 jinja2==3.1.6
     # via mkdocs
     # via mkdocs-material
     # via mkdocstrings
-markdown==3.8.2
+markdown==3.9
     # via mkdocs
     # via mkdocs-autorefs
     # via mkdocs-material
     # via mkdocstrings
     # via pymdown-extensions
-markupsafe==3.0.2
+markupsafe==3.0.3
     # via jinja2
     # via mkdocs
     # via mkdocs-autorefs
@@ -57,18 +57,18 @@ mkdocs==1.6.1
     # via mkdocs-autorefs
     # via mkdocs-material
     # via mkdocstrings
-mkdocs-autorefs==1.4.2
+mkdocs-autorefs==1.4.3
     # via mkdocstrings
     # via mkdocstrings-python
 mkdocs-get-deps==0.2.0
     # via mkdocs
-mkdocs-material==9.6.15
+mkdocs-material==9.6.22
     # via configcore
 mkdocs-material-extensions==1.3.1
     # via mkdocs-material
-mkdocstrings==0.29.1
+mkdocstrings==0.30.1
     # via mkdocstrings-python
-mkdocstrings-python==1.16.12
+mkdocstrings-python==1.18.2
     # via configcore
 packaging==25.0
     # via mkdocs
@@ -76,39 +76,39 @@ paginate==0.5.7
     # via mkdocs-material
 pathspec==0.12.1
     # via mkdocs
-platformdirs==4.3.8
+platformdirs==4.5.0
     # via mkdocs-get-deps
-pydantic==2.11.7
+pydantic==2.12.2
     # via pydantic-settings
-pydantic-core==2.33.2
+pydantic-core==2.41.4
     # via pydantic
-pydantic-settings==2.10.1
+pydantic-settings==2.11.0
     # via configcore
 pygments==2.19.2
     # via mkdocs-material
-pymdown-extensions==10.16
+pymdown-extensions==10.16.1
     # via mkdocs-material
     # via mkdocstrings
 python-dateutil==2.9.0.post0
     # via ghp-import
 python-dotenv==1.1.1
     # via pydantic-settings
-pyyaml==6.0.2
+pyyaml==6.0.3
     # via mkdocs
     # via mkdocs-get-deps
     # via pymdown-extensions
     # via pyyaml-env-tag
 pyyaml-env-tag==1.1
     # via mkdocs
-requests==2.32.4
+requests==2.32.5
     # via mkdocs-material
 six==1.17.0
     # via python-dateutil
-typing-extensions==4.14.0
+typing-extensions==4.15.0
     # via pydantic
     # via pydantic-core
     # via typing-inspection
-typing-inspection==0.4.1
+typing-inspection==0.4.2
     # via pydantic
     # via pydantic-settings
 urllib3==2.5.0