diff --git a/framework/pyproject.toml b/framework/pyproject.toml
index 8eb1098057a4..14c1e4ab16ca 100644
--- a/framework/pyproject.toml
+++ b/framework/pyproject.toml
@@ -2,16 +2,14 @@
 requires = ["poetry-core>=2.1.3"]
 build-backend = "poetry.core.masonry.api"
 
-[tool.poetry]
+[project]
 name = "flwr"
 version = "1.27.0"
 description = "Flower: A Friendly Federated AI Framework"
 license = "Apache-2.0"
-authors = ["The Flower Authors <hello@flower.ai>"]
+authors = [{ name = "The Flower Authors", email = "hello@flower.ai" }]
 readme = "README.md"
-homepage = "https://flower.ai"
-repository = "https://github.com/adap/flower"
-documentation = "https://flower.ai"
+requires-python = ">=3.10,<4.0"
 keywords = [
     "Artificial Intelligence",
     "Federated AI",
@@ -44,10 +42,34 @@ classifiers = [
     "Topic :: Software Development :: Libraries :: Python Modules",
     "Typing :: Typed",
 ]
-packages = [{ include = "flwr", from = "py" }]
-exclude = ["py/**/*_test.py"]
+dependencies = [
+    "numpy>=1.26.0,<3.0.0",
+    "grpcio>=1.70.0,<2.0.0",
+    "grpcio-health-checking>=1.70.0,<2.0.0",
+    "protobuf>=5.28.0,<7.0.0",
+    "cryptography>=46.0.5,<47.0.0",
+    "pycryptodome>=3.18.0,<4.0.0",
+    "iterators>=0.0.2,<0.0.3",
+    "typer>=0.12.5,<0.21.0",
+    "tomli>=2.0.1,<3.0.0",
+    "tomli-w>=1.0.0,<2.0.0",
+    "pathspec>=0.12.1,<0.13.0",
+    "rich>=13.5.0,<14.0.0",
+    "pyyaml>=6.0.2,<7.0.0",
+    "requests>=2.31.0,<3.0.0",
+    "click>=8.0.0,<9.0.0",
+    "SQLAlchemy>=2.0.45,<3.0.0",
+    "alembic>=1.18.1,<2.0.0",
+]
+
+[project.optional-dependencies]
+simulation = [
+    "ray==2.51.1; python_version >= '3.10' and python_version < '3.13'",
+    "ray==2.51.1; python_version == '3.13' and sys_platform != 'win32'",
+]
+rest = ["starlette>=0.50.0,<0.51.0", "uvicorn[standard]>=0.40.0,<0.41.0"]
 
-[tool.poetry.scripts]
+[project.scripts]
 # `flwr` CLI
 flwr = "flwr.cli.app:app"
 # Simulation Engine
@@ -59,95 +81,76 @@ flower-superexec = "flwr.supercore.cli:flower_superexec"
 flwr-serverapp = "flwr.server.serverapp:flwr_serverapp"
 flwr-clientapp = "flwr.supernode.cli:flwr_clientapp"
 
-[tool.poetry.dependencies]
-python = "^3.10"
-# Mandatory dependencies
-numpy = ">=1.26.0,<3.0.0"
-grpcio = "^1.70.0"
-grpcio-health-checking = "^1.70.0"
-protobuf = ">=5.28.0,<7.0.0"
-cryptography = "^46.0.5"
-pycryptodome = "^3.18.0"
-iterators = "^0.0.2"
-typer = ">=0.12.5,<0.21.0"
-tomli = "^2.0.1"
-tomli-w = "^1.0.0"
-pathspec = "^0.12.1"
-rich = "^13.5.0"
-pyyaml = "^6.0.2"
-requests = "^2.31.0"
-click = "^8.0.0"
-SQLAlchemy = "^2.0.45"
-alembic = "^1.18.1"
-# Optional dependencies (Simulation Engine)
-ray = [
-    { version = "==2.51.1", optional = true, python = ">=3.10,<3.13" },
-    { version = "==2.51.1", optional = true, python = "==3.13", markers = "sys_platform != 'win32'" },
+[project.urls]
+homepage = "https://flower.ai"
+repository = "https://github.com/adap/flower"
+documentation = "https://flower.ai"
+
+[dependency-groups]
+dev = [
+    "types-dataclasses==0.6.6",
+    "types-protobuf==5.29.1.20250403",
+    "types-requests==2.31.0.20240125",
+    "types-setuptools==82.0.0.20260210",
+    "setuptools==82.0.0",
+    "clang-format==17.0.6",
+    "isort==5.13.2",
+    "black[jupyter]==25.11.0",
+    "taplo==0.9.3",
+    "docformatter==1.7.5",
+    "mypy==1.8.0",
+    "pylint==3.3.1",
+    "parameterized==0.9.0",
+    "pytest==7.4.4",
+    "pytest-cov==4.1.0",
+    "pytest-watcher==0.4.3",
+    "grpcio-tools==1.70.0",
+    "mypy-protobuf==3.6.0",
+    "jupyterlab==4.0.12",
+    "rope==1.13.0",
+    "semver==3.0.2",
+    "sphinx==7.4.7",
+    "sphinx-intl==2.2.0",
+    "sphinx-click==6.0.0",
+    "myst-parser==3.0.1",
+    "sphinx-design==0.6.1",
+    "sphinx-copybutton==0.5.2",
+    "sphinxcontrib-mermaid==0.9.2",
+    "sphinxcontrib-youtube==1.4.1",
+    "furo==2024.8.6",
+    "sphinx-reredirects==0.1.5",
+    "nbsphinx==0.9.5",
+    "nbstripout==0.6.1",
+    "ruff==0.14.5",
+    "sphinx-argparse==0.4.0",
+    "pipreqs==0.4.13",
+    "mdformat==1.0.0",
+    "mdformat-gfm==1.0.0",
+    "mdformat-frontmatter==2.0.10",
+    "mdformat-beautysh==1.0.0",
+    "beautysh==6.4.2",
+    "twine==6.2.0",
+    "types-PyYAML>=6.0.2,<7.0.0",
+    "pyroma==4.2",
+    "check-wheel-contents==0.6.3",
+    "GitPython==3.1.32",
+    "PyGithub==2.1.1",
+    "licensecheck==2025.1.0",
+    "pre-commit==3.5.0",
+    "sphinx-substitution-extensions==2022.2.16",
+    "sphinxext-opengraph==0.9.1",
+    "docstrfmt @ git+https://github.com/charlesbvll/docstrfmt.git@patch-2 ; python_version >= '3.10' and python_version < '4.0'",
+    "docsig==0.64.0",
+    "paracelsus==0.15.0",
+    "devtool",
 ]
-# Optional dependencies (REST transport layer)
-starlette = { version = "^0.50.0", optional = true }
-uvicorn = { version = "^0.40.0", extras = ["standard"], optional = true }
 
-[tool.poetry.extras]
-simulation = ["ray"]
-rest = ["starlette", "uvicorn"]
+[tool.poetry]
+packages = [{ include = "flwr", from = "py" }]
+exclude = ["py/**/*_test.py"]
 
 [tool.poetry.group.dev.dependencies]
-types-dataclasses = "==0.6.6"
-types-protobuf = "==5.29.1.20250403"
-types-requests = "==2.31.0.20240125"
-types-setuptools = "==82.0.0.20260210"
-setuptools = "==82.0.0"
-clang-format = "==17.0.6"
-isort = "==5.13.2"
-black = { version = "==25.11.0", extras = ["jupyter"] }
-taplo = "==0.9.3"
-docformatter = "==1.7.5"
-mypy = "==1.8.0"
-pylint = "==3.3.1"
-parameterized = "==0.9.0"
-pytest = "==7.4.4"
-pytest-cov = "==4.1.0"
-pytest-watcher = "==0.4.3"
-grpcio-tools = "==1.70.0"
-mypy-protobuf = "==3.6.0"
-jupyterlab = "==4.0.12"
-rope = "==1.13.0"
-semver = "==3.0.2"
-sphinx = "==7.4.7"
-sphinx-intl = "==2.2.0"
-sphinx-click = "==6.0.0"
-myst-parser = "==3.0.1"
-sphinx-design = "==0.6.1"
-sphinx-copybutton = "==0.5.2"
-sphinxcontrib-mermaid = "==0.9.2"
-sphinxcontrib-youtube = "==1.4.1"
-furo = "==2024.8.6"
-sphinx-reredirects = "==0.1.5"
-nbsphinx = "==0.9.5"
-nbstripout = "==0.6.1"
-ruff = "==0.14.5"
-sphinx-argparse = "==0.4.0"
-pipreqs = "==0.4.13"
-mdformat = "==1.0.0"
-mdformat-gfm = "==1.0.0"
-mdformat-frontmatter = "==2.0.10"
-mdformat-beautysh = "==1.0.0"
-beautysh = "==6.4.2"
-twine = "==6.2.0"
-types-PyYAML = "^6.0.2"
-pyroma = "==4.2"
-check-wheel-contents = "==0.6.3"
-GitPython = "==3.1.32"
-PyGithub = "==2.1.1"
-licensecheck = "==2025.1.0"
-pre-commit = "==3.5.0"
-sphinx-substitution-extensions = "2022.02.16"
-sphinxext-opengraph = "==0.9.1"
-docstrfmt = { git = "https://github.com/charlesbvll/docstrfmt.git", branch = "patch-2", python = ">=3.10,<4.0.0" }
-docsig = "==0.64.0"
-paracelsus = "==0.15.0"
-devtool = [{ path = "./devtool", develop = true }]
+devtool = { path = "./devtool", develop = true }
 
 [tool.docstrfmt]
 extend_exclude = [