diff --git a/poetry.lock b/poetry.lock
index 86ff01bd0aa..a9e6ace852d 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,27 +1,28 @@
-# This file is automatically @generated by Poetry 1.9.0.dev0 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
 
 [[package]]
 name = "build"
-version = "1.1.1"
+version = "1.2.1"
 description = "A simple, correct Python build frontend"
 optional = false
-python-versions = ">= 3.7"
+python-versions = ">=3.8"
 files = [
-    {file = "build-1.1.1-py3-none-any.whl", hash = "sha256:8ed0851ee76e6e38adce47e4bee3b51c771d86c64cf578d0c2245567ee200e73"},
-    {file = "build-1.1.1.tar.gz", hash = "sha256:8eea65bb45b1aac2e734ba2cc8dad3a6d97d97901a395bd0ed3e7b46953d2a31"},
+    {file = "build-1.2.1-py3-none-any.whl", hash = "sha256:75e10f767a433d9a86e50d83f418e83efc18ede923ee5ff7df93b6cb0306c5d4"},
+    {file = "build-1.2.1.tar.gz", hash = "sha256:526263f4870c26f26c433545579475377b2b7588b6f1eac76a001e873ae3e19d"},
 ]
 
 [package.dependencies]
 colorama = {version = "*", markers = "os_name == \"nt\""}
 importlib-metadata = {version = ">=4.6", markers = "python_full_version < \"3.10.2\""}
-packaging = ">=19.0"
+packaging = ">=19.1"
 pyproject_hooks = "*"
 tomli = {version = ">=1.1.0", markers = "python_version < \"3.11\""}
 
 [package.extras]
 docs = ["furo (>=2023.08.17)", "sphinx (>=7.0,<8.0)", "sphinx-argparse-cli (>=1.5)", "sphinx-autodoc-typehints (>=1.10)", "sphinx-issues (>=3.0.0)"]
-test = ["filelock (>=3)", "pytest (>=6.2.4)", "pytest-cov (>=2.12)", "pytest-mock (>=2)", "pytest-rerunfailures (>=9.1)", "pytest-xdist (>=1.34)", "setuptools (>=42.0.0)", "setuptools (>=56.0.0)", "setuptools (>=56.0.0)", "setuptools (>=67.8.0)", "wheel (>=0.36.0)"]
-typing = ["importlib-metadata (>=5.1)", "mypy (>=1.5.0,<1.6.0)", "tomli", "typing-extensions (>=3.7.4.3)"]
+test = ["build[uv,virtualenv]", "filelock (>=3)", "pytest (>=6.2.4)", "pytest-cov (>=2.12)", "pytest-mock (>=2)", "pytest-rerunfailures (>=9.1)", "pytest-xdist (>=1.34)", "setuptools (>=42.0.0)", "setuptools (>=56.0.0)", "setuptools (>=56.0.0)", "setuptools (>=67.8.0)", "wheel (>=0.36.0)"]
+typing = ["build[uv]", "importlib-metadata (>=5.1)", "mypy (>=1.9.0,<1.10.0)", "tomli", "typing-extensions (>=3.7.4.3)"]
+uv = ["uv (>=0.1.18)"]
 virtualenv = ["virtualenv (>=20.0.35)"]
 
 [[package]]
@@ -1595,4 +1596,4 @@ testing = ["big-O", "jaraco.functools", "jaraco.itertools", "more-itertools", "p
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "f561c063b73aa744ed0b11d2e6e2b36dd5334e96607be8b3f2ebc895a5708870"
+content-hash = "08e1102283e5a8d9a88aee8a081bb45cde8ca52731ea726053dd3cb84bb6d4c1"
diff --git a/pyproject.toml b/pyproject.toml
index 07265de94eb..ba9422df212 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ python = "^3.8"
 
 poetry-core = "1.9.0"
 poetry-plugin-export = "^1.7.0"
-build = "^1.1.1"
+build = "^1.2.1"
 cachecontrol = { version = "^0.14.0", extras = ["filecache"] }
 cleo = "^2.1.0"
 dulwich = "^0.21.2"
diff --git a/src/poetry/__version__.py b/src/poetry/__version__.py
index 13fa08fc202..2c9a2eac138 100644
--- a/src/poetry/__version__.py
+++ b/src/poetry/__version__.py
@@ -1,16 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
-
 from poetry.utils._compat import metadata
 
 
-if TYPE_CHECKING:
-    from collections.abc import Callable
-
-
-# The metadata.version that we import for Python 3.7 is untyped, work around
-# that.
-version: Callable[[str], str] = metadata.version
-
-__version__ = version("poetry")
+__version__ = metadata.version("poetry")
diff --git a/src/poetry/console/logging/formatters/formatter.py b/src/poetry/console/logging/formatters/formatter.py
index 8b595137894..d18002be4b7 100644
--- a/src/poetry/console/logging/formatters/formatter.py
+++ b/src/poetry/console/logging/formatters/formatter.py
@@ -2,5 +2,5 @@
 
 
 class Formatter:
-    def format(self, record: str) -> str:
+    def format(self, msg: str) -> str:
         raise NotImplementedError()
diff --git a/src/poetry/installation/chef.py b/src/poetry/installation/chef.py
index 79225c085a0..35586e42036 100644
--- a/src/poetry/installation/chef.py
+++ b/src/poetry/installation/chef.py
@@ -15,6 +15,8 @@
 
 
 if TYPE_CHECKING:
+    from build import DistributionType
+
     from poetry.repositories import RepositoryPool
     from poetry.utils.cache import ArtifactCache
     from poetry.utils.env import Env
@@ -48,7 +50,7 @@ def _prepare(
     ) -> Path:
         from subprocess import CalledProcessError
 
-        distribution = "wheel" if not editable else "editable"
+        distribution: DistributionType = "editable" if editable else "wheel"  # type: ignore[assignment]
         error: Exception | None = None
 
         try:
diff --git a/src/poetry/json/__init__.py b/src/poetry/json/__init__.py
index de4f1789866..ef3bdbe2495 100644
--- a/src/poetry/json/__init__.py
+++ b/src/poetry/json/__init__.py
@@ -7,7 +7,7 @@
 
 import fastjsonschema
 
-from fastjsonschema.exceptions import JsonSchemaException
+from fastjsonschema.exceptions import JsonSchemaValueException
 from poetry.core.json import SCHEMA_DIR as CORE_SCHEMA_DIR
 
 
@@ -27,7 +27,7 @@ def validate_object(obj: dict[str, Any]) -> list[str]:
     errors = []
     try:
         validate(obj)
-    except JsonSchemaException as e:
+    except JsonSchemaValueException as e:
         errors = [e.message]
 
     core_schema = json.loads(
diff --git a/src/poetry/puzzle/solver.py b/src/poetry/puzzle/solver.py
index af107646876..9675bc1f6f0 100644
--- a/src/poetry/puzzle/solver.py
+++ b/src/poetry/puzzle/solver.py
@@ -20,6 +20,7 @@
 if TYPE_CHECKING:
     from collections.abc import Collection
     from collections.abc import Iterator
+    from collections.abc import Sequence
 
     from cleo.io.io import IO
     from packaging.utils import NormalizedName
@@ -207,7 +208,7 @@ def __init__(self, id: DFSNodeID, name: str, base_name: str) -> None:
         self.name = name
         self.base_name = base_name
 
-    def reachable(self: T) -> list[T]:
+    def reachable(self: T) -> Sequence[T]:
         return []
 
     def visit(self, parents: list[PackageNode]) -> None:
@@ -284,7 +285,7 @@ def __init__(
             package.name,
         )
 
-    def reachable(self) -> list[PackageNode]:
+    def reachable(self) -> Sequence[PackageNode]:
         children: list[PackageNode] = []
 
         for dependency in self.package.all_requires:
diff --git a/src/poetry/utils/isolated_build.py b/src/poetry/utils/isolated_build.py
index 2f46dfd37fe..5e7cc103cb4 100644
--- a/src/poetry/utils/isolated_build.py
+++ b/src/poetry/utils/isolated_build.py
@@ -19,6 +19,7 @@
 if TYPE_CHECKING:
     from pathlib import Path
 
+    from build import DistributionType
     from build import ProjectBuilder
 
     from poetry.repositories import RepositoryPool
@@ -107,7 +108,7 @@ def install(self, requirements: Collection[str]) -> None:
 @contextmanager
 def isolated_builder(
     source: Path,
-    distribution: str = "wheel",
+    distribution: DistributionType = "wheel",
     python_executable: Path | None = None,
     pool: RepositoryPool | None = None,
 ) -> Iterator[ProjectBuilder]:
diff --git a/tests/installation/test_installer.py b/tests/installation/test_installer.py
index b90d24b2e78..dd384e10217 100644
--- a/tests/installation/test_installer.py
+++ b/tests/installation/test_installer.py
@@ -1625,7 +1625,7 @@ def test_run_install_duplicate_dependencies_different_constraints_with_lock(
     assert installer.executor.removals_count == 0
 
 
-def test_run_update_uninstalls_after_removal_transient_dependency(
+def test_run_update_uninstalls_after_removal_transitive_dependency(
     installer: Installer,
     locker: Locker,
     repo: Repository,
diff --git a/tests/puzzle/test_solver.py b/tests/puzzle/test_solver.py
index b437fc07d71..36f41d88b05 100644
--- a/tests/puzzle/test_solver.py
+++ b/tests/puzzle/test_solver.py
@@ -1792,7 +1792,7 @@ def test_solver_duplicate_dependencies_ignore_overrides_with_empty_marker_inters
     solver: Solver, repo: Repository, package: ProjectPackage
 ) -> None:
     """
-    Empty intersection between top level dependency and transient dependency.
+    Empty intersection between top level dependency and transitive dependency.
     """
     package.add_dependency(Factory.create_dependency("A", {"version": "1.0"}))
     package.add_dependency(
@@ -3307,7 +3307,7 @@ def test_solver_chooses_direct_dependency_from_explicit_if_explicit(
     assert ops[0].package.source_url is None
 
 
-def test_solver_ignores_explicit_repo_for_transient_dependencies(
+def test_solver_ignores_explicit_repo_for_transitive_dependencies(
     package: ProjectPackage,
     io: NullIO,
     legacy_repository: LegacyRepository,
@@ -4358,7 +4358,7 @@ def test_solver_does_not_update_ref_of_locked_vcs_package(
         Factory.create_dependency("demo", {"git": "https://github.com/demo/demo.git"})
     )
 
-    # transient dependencies of demo
+    # transitive dependencies of demo
     pendulum = get_package("pendulum", "2.0.3")
     repo.add_package(pendulum)
 
@@ -4404,7 +4404,7 @@ def test_solver_does_not_fetch_locked_vcs_package_with_ref(
         Factory.create_dependency("demo", {"git": "https://github.com/demo/demo.git"})
     )
 
-    # transient dependencies of demo
+    # transitive dependencies of demo
     pendulum = get_package("pendulum", "2.0.3")
     repo.add_package(pendulum)
 
diff --git a/tests/repositories/fixtures/python_hosted.py b/tests/repositories/fixtures/python_hosted.py
index 0bddf929a7b..a00f494e916 100644
--- a/tests/repositories/fixtures/python_hosted.py
+++ b/tests/repositories/fixtures/python_hosted.py
@@ -24,23 +24,23 @@
 @pytest.fixture
 def mock_files_python_hosted_factory(http: type[httpretty]) -> PythonHostedFileMocker:
     def factory(
-        distribution_locations: list[Path], metadata_locations: list[Path] | None = None
+        distribution_locations: list[Path], metadata_locations: list[Path]
     ) -> None:
         def file_callback(
             request: HTTPrettyRequest, uri: str, headers: dict[str, Any]
         ) -> list[int | dict[str, Any] | bytes | str]:
             name = Path(urlparse(uri).path).name
 
-            if metadata_locations and name.endswith(".metadata"):
-                for location in metadata_locations:
-                    fixture = location / name
-                    if fixture.exists():
-                        return [200, headers, fixture.read_text()]
-            else:
-                for location in distribution_locations:
-                    fixture = location / name
-                    if fixture.exists():
-                        return [200, headers, fixture.read_bytes()]
+            locations = (
+                metadata_locations
+                if name.endswith(".metadata")
+                else distribution_locations
+            )
+
+            for location in locations:
+                fixture = location / name
+                if fixture.exists():
+                    return [200, headers, fixture.read_bytes()]
 
             return [404, headers, b"Not Found"]
 
@@ -68,7 +68,7 @@ def mock_file_callback(
 def mock_files_python_hosted(
     mock_files_python_hosted_factory: PythonHostedFileMocker,
     package_distribution_locations: list[Path],
-    package_metadata_locations: list[Path] | None,
+    package_metadata_locations: list[Path],
 ) -> Iterator[None]:
     mock_files_python_hosted_factory(
         distribution_locations=package_distribution_locations,
diff --git a/tests/types.py b/tests/types.py
index c334664af30..840545bf27f 100644
--- a/tests/types.py
+++ b/tests/types.py
@@ -96,7 +96,7 @@ class PythonHostedFileMocker(Protocol):
     def __call__(
         self,
         distribution_locations: list[Path],
-        metadata_locations: list[Path] | None = None,
+        metadata_locations: list[Path],
     ) -> None: ...