diff --git a/src/py/flwr/cli/flower_toml.py b/src/py/flwr/cli/config_utils.py
similarity index 91%
rename from src/py/flwr/cli/flower_toml.py
rename to src/py/flwr/cli/config_utils.py
index 103f83532054..a6bf1d5a6b3a 100644
--- a/src/py/flwr/cli/flower_toml.py
+++ b/src/py/flwr/cli/config_utils.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # ==============================================================================
-"""Utility to validate the `flower.toml` file."""
+"""Utility to validate the `pyproject.toml` file."""
 
 import os
 from typing import Any, Dict, List, Optional, Tuple
@@ -25,7 +25,7 @@
 def load_and_validate_with_defaults(
     path: Optional[str] = None,
 ) -> Tuple[Optional[Dict[str, Any]], List[str], List[str]]:
-    """Load and validate flower.toml as dict.
+    """Load and validate pyproject.toml as dict.
 
     Returns
     -------
@@ -37,7 +37,7 @@ def load_and_validate_with_defaults(
 
     if config is None:
         errors = [
-            "Project configuration could not be loaded. flower.toml does not exist."
+            "Project configuration could not be loaded. pyproject.toml does not exist."
         ]
         return (None, errors, [])
 
@@ -58,10 +58,10 @@ def load_and_validate_with_defaults(
 
 
 def load(path: Optional[str] = None) -> Optional[Dict[str, Any]]:
-    """Load flower.toml and return as dict."""
+    """Load pyproject.toml and return as dict."""
     if path is None:
         cur_dir = os.getcwd()
-        toml_path = os.path.join(cur_dir, "flower.toml")
+        toml_path = os.path.join(cur_dir, "pyproject.toml")
     else:
         toml_path = path
 
@@ -74,7 +74,7 @@ def load(path: Optional[str] = None) -> Optional[Dict[str, Any]]:
 
 
 def validate_fields(config: Dict[str, Any]) -> Tuple[bool, List[str], List[str]]:
-    """Validate flower.toml fields."""
+    """Validate pyproject.toml fields."""
     errors = []
     warnings = []
 
@@ -106,7 +106,7 @@ def validate_fields(config: Dict[str, Any]) -> Tuple[bool, List[str], List[str]]
 
 
 def validate(config: Dict[str, Any]) -> Tuple[bool, List[str], List[str]]:
-    """Validate flower.toml."""
+    """Validate pyproject.toml."""
     is_valid, errors, warnings = validate_fields(config)
 
     if not is_valid:
diff --git a/src/py/flwr/cli/flower_toml_test.py b/src/py/flwr/cli/config_utils_test.py
similarity index 65%
rename from src/py/flwr/cli/flower_toml_test.py
rename to src/py/flwr/cli/config_utils_test.py
index 72a52e4e8b9b..4d949c0042a4 100644
--- a/src/py/flwr/cli/flower_toml_test.py
+++ b/src/py/flwr/cli/config_utils_test.py
@@ -18,15 +18,29 @@
 import textwrap
 from typing import Any, Dict
 
-from .flower_toml import load, validate, validate_fields
+from .config_utils import load, validate, validate_fields
 
 
-def test_load_flower_toml_load_from_cwd(tmp_path: str) -> None:
+def test_load_pyproject_toml_load_from_cwd(tmp_path: str) -> None:
     """Test if load_template returns a string."""
     # Prepare
-    flower_toml_content = """
+    pyproject_toml_content = """
+        [build-system]
+        requires = ["hatchling"]
+        build-backend = "hatchling.build"
+
         [project]
         name = "fedgpt"
+        version = "1.0.0"
+        description = ""
+        authors = [
+            { name = "The Flower Authors", email = "hello@flower.ai" },
+        ]
+        license = {text = "Apache License (2.0)"}
+        dependencies = [
+            "flwr[simulation]>=1.8.0,<2.0",
+            "numpy>=1.21.0",
+        ]
 
         [flower.components]
         serverapp = "fedgpt.server:app"
@@ -39,8 +53,14 @@ def test_load_flower_toml_load_from_cwd(tmp_path: str) -> None:
         count = 10 # optional
     """
     expected_config = {
+        "build-system": {"build-backend": "hatchling.build", "requires": ["hatchling"]},
         "project": {
             "name": "fedgpt",
+            "version": "1.0.0",
+            "description": "",
+            "authors": [{"email": "hello@flower.ai", "name": "The Flower Authors"}],
+            "license": {"text": "Apache License (2.0)"},
+            "dependencies": ["flwr[simulation]>=1.8.0,<2.0", "numpy>=1.21.0"],
         },
         "flower": {
             "components": {
@@ -60,8 +80,8 @@ def test_load_flower_toml_load_from_cwd(tmp_path: str) -> None:
     try:
         # Change into the temporary directory
         os.chdir(tmp_path)
-        with open("flower.toml", "w", encoding="utf-8") as f:
-            f.write(textwrap.dedent(flower_toml_content))
+        with open("pyproject.toml", "w", encoding="utf-8") as f:
+            f.write(textwrap.dedent(pyproject_toml_content))
 
         # Execute
         config = load()
@@ -72,12 +92,26 @@ def test_load_flower_toml_load_from_cwd(tmp_path: str) -> None:
         os.chdir(origin)
 
 
-def test_load_flower_toml_from_path(tmp_path: str) -> None:
+def test_load_pyproject_toml_from_path(tmp_path: str) -> None:
     """Test if load_template returns a string."""
     # Prepare
-    flower_toml_content = """
+    pyproject_toml_content = """
+        [build-system]
+        requires = ["hatchling"]
+        build-backend = "hatchling.build"
+
         [project]
         name = "fedgpt"
+        version = "1.0.0"
+        description = ""
+        authors = [
+            { name = "The Flower Authors", email = "hello@flower.ai" },
+        ]
+        license = {text = "Apache License (2.0)"}
+        dependencies = [
+            "flwr[simulation]>=1.8.0,<2.0",
+            "numpy>=1.21.0",
+        ]
 
         [flower.components]
         serverapp = "fedgpt.server:app"
@@ -90,8 +124,14 @@ def test_load_flower_toml_from_path(tmp_path: str) -> None:
         count = 10 # optional
     """
     expected_config = {
+        "build-system": {"build-backend": "hatchling.build", "requires": ["hatchling"]},
         "project": {
             "name": "fedgpt",
+            "version": "1.0.0",
+            "description": "",
+            "authors": [{"email": "hello@flower.ai", "name": "The Flower Authors"}],
+            "license": {"text": "Apache License (2.0)"},
+            "dependencies": ["flwr[simulation]>=1.8.0,<2.0", "numpy>=1.21.0"],
         },
         "flower": {
             "components": {
@@ -111,11 +151,11 @@ def test_load_flower_toml_from_path(tmp_path: str) -> None:
     try:
         # Change into the temporary directory
         os.chdir(tmp_path)
-        with open("flower.toml", "w", encoding="utf-8") as f:
-            f.write(textwrap.dedent(flower_toml_content))
+        with open("pyproject.toml", "w", encoding="utf-8") as f:
+            f.write(textwrap.dedent(pyproject_toml_content))
 
         # Execute
-        config = load(path=os.path.join(tmp_path, "flower.toml"))
+        config = load(path=os.path.join(tmp_path, "pyproject.toml"))
 
         # Assert
         assert config == expected_config
@@ -123,8 +163,8 @@ def test_load_flower_toml_from_path(tmp_path: str) -> None:
         os.chdir(origin)
 
 
-def test_validate_flower_toml_fields_empty() -> None:
-    """Test that validate_flower_toml_fields fails correctly."""
+def test_validate_pyproject_toml_fields_empty() -> None:
+    """Test that validate_pyproject_toml_fields fails correctly."""
     # Prepare
     config: Dict[str, Any] = {}
 
@@ -137,8 +177,8 @@ def test_validate_flower_toml_fields_empty() -> None:
     assert len(warnings) == 0
 
 
-def test_validate_flower_toml_fields_no_flower() -> None:
-    """Test that validate_flower_toml_fields fails correctly."""
+def test_validate_pyproject_toml_fields_no_flower() -> None:
+    """Test that validate_pyproject_toml_fields fails correctly."""
     # Prepare
     config = {
         "project": {
@@ -159,8 +199,8 @@ def test_validate_flower_toml_fields_no_flower() -> None:
     assert len(warnings) == 0
 
 
-def test_validate_flower_toml_fields_no_flower_components() -> None:
-    """Test that validate_flower_toml_fields fails correctly."""
+def test_validate_pyproject_toml_fields_no_flower_components() -> None:
+    """Test that validate_pyproject_toml_fields fails correctly."""
     # Prepare
     config = {
         "project": {
@@ -182,8 +222,8 @@ def test_validate_flower_toml_fields_no_flower_components() -> None:
     assert len(warnings) == 0
 
 
-def test_validate_flower_toml_fields_no_server_and_client_app() -> None:
-    """Test that validate_flower_toml_fields fails correctly."""
+def test_validate_pyproject_toml_fields_no_server_and_client_app() -> None:
+    """Test that validate_pyproject_toml_fields fails correctly."""
     # Prepare
     config = {
         "project": {
@@ -205,8 +245,8 @@ def test_validate_flower_toml_fields_no_server_and_client_app() -> None:
     assert len(warnings) == 0
 
 
-def test_validate_flower_toml_fields() -> None:
-    """Test that validate_flower_toml_fields succeeds correctly."""
+def test_validate_pyproject_toml_fields() -> None:
+    """Test that validate_pyproject_toml_fields succeeds correctly."""
     # Prepare
     config = {
         "project": {
@@ -228,8 +268,8 @@ def test_validate_flower_toml_fields() -> None:
     assert len(warnings) == 0
 
 
-def test_validate_flower_toml() -> None:
-    """Test that validate_flower_toml succeeds correctly."""
+def test_validate_pyproject_toml() -> None:
+    """Test that validate_pyproject_toml succeeds correctly."""
     # Prepare
     config = {
         "project": {
@@ -256,8 +296,8 @@ def test_validate_flower_toml() -> None:
     assert not warnings
 
 
-def test_validate_flower_toml_fail() -> None:
-    """Test that validate_flower_toml fails correctly."""
+def test_validate_pyproject_toml_fail() -> None:
+    """Test that validate_pyproject_toml fails correctly."""
     # Prepare
     config = {
         "project": {
diff --git a/src/py/flwr/cli/new/new.py b/src/py/flwr/cli/new/new.py
index 0c429ce34cf2..ee451d710a02 100644
--- a/src/py/flwr/cli/new/new.py
+++ b/src/py/flwr/cli/new/new.py
@@ -128,7 +128,6 @@ def new(
     # List of files to render
     files = {
         "README.md": {"template": "app/README.md.tpl"},
-        "flower.toml": {"template": "app/flower.toml.tpl"},
         "pyproject.toml": {"template": f"app/pyproject.{framework_str}.toml.tpl"},
         f"{pnl}/__init__.py": {"template": "app/code/__init__.py.tpl"},
         f"{pnl}/server.py": {"template": f"app/code/server.{framework_str}.py.tpl"},
diff --git a/src/py/flwr/cli/new/new_test.py b/src/py/flwr/cli/new/new_test.py
index 11620d234191..93372758265d 100644
--- a/src/py/flwr/cli/new/new_test.py
+++ b/src/py/flwr/cli/new/new_test.py
@@ -68,7 +68,6 @@ def test_new(tmp_path: str) -> None:
     expected_files_top_level = {
         "fedgpt",
         "README.md",
-        "flower.toml",
         "pyproject.toml",
     }
     expected_files_module = {
diff --git a/src/py/flwr/cli/new/templates/app/flower.toml.tpl b/src/py/flwr/cli/new/templates/app/flower.toml.tpl
deleted file mode 100644
index 07a6ffaf9e49..000000000000
--- a/src/py/flwr/cli/new/templates/app/flower.toml.tpl
+++ /dev/null
@@ -1,13 +0,0 @@
-[project]
-name = "$project_name"
-version = "1.0.0"
-description = ""
-license = "Apache-2.0"
-authors = [
-    "The Flower Authors <hello@flower.ai>",
-]
-readme = "README.md"
-
-[flower.components]
-serverapp = "$project_name.server:app"
-clientapp = "$project_name.client:app"
diff --git a/src/py/flwr/cli/new/templates/app/pyproject.numpy.toml.tpl b/src/py/flwr/cli/new/templates/app/pyproject.numpy.toml.tpl
index 9701c62af6f0..47e5dda2a4a4 100644
--- a/src/py/flwr/cli/new/templates/app/pyproject.numpy.toml.tpl
+++ b/src/py/flwr/cli/new/templates/app/pyproject.numpy.toml.tpl
@@ -17,3 +17,7 @@ dependencies = [
 
 [tool.hatch.build.targets.wheel]
 packages = ["."]
+
+[flower.components]
+serverapp = "$project_name.server:app"
+clientapp = "$project_name.client:app"
diff --git a/src/py/flwr/cli/new/templates/app/pyproject.pytorch.toml.tpl b/src/py/flwr/cli/new/templates/app/pyproject.pytorch.toml.tpl
index 0661c7b730c1..dec132890e81 100644
--- a/src/py/flwr/cli/new/templates/app/pyproject.pytorch.toml.tpl
+++ b/src/py/flwr/cli/new/templates/app/pyproject.pytorch.toml.tpl
@@ -19,3 +19,7 @@ dependencies = [
 
 [tool.hatch.build.targets.wheel]
 packages = ["."]
+
+[flower.components]
+serverapp = "$project_name.server:app"
+clientapp = "$project_name.client:app"
diff --git a/src/py/flwr/cli/new/templates/app/pyproject.tensorflow.toml.tpl b/src/py/flwr/cli/new/templates/app/pyproject.tensorflow.toml.tpl
index 5a017eb6ed74..2afe9a86e2c5 100644
--- a/src/py/flwr/cli/new/templates/app/pyproject.tensorflow.toml.tpl
+++ b/src/py/flwr/cli/new/templates/app/pyproject.tensorflow.toml.tpl
@@ -18,3 +18,7 @@ dependencies = [
 
 [tool.hatch.build.targets.wheel]
 packages = ["."]
+
+[flower.components]
+serverapp = "$project_name.server:app"
+clientapp = "$project_name.client:app"
diff --git a/src/py/flwr/cli/run/run.py b/src/py/flwr/cli/run/run.py
index 98b5da1843a6..4cd5124e1668 100644
--- a/src/py/flwr/cli/run/run.py
+++ b/src/py/flwr/cli/run/run.py
@@ -18,7 +18,7 @@
 
 import typer
 
-from flwr.cli import flower_toml
+from flwr.cli import config_utils
 from flwr.simulation.run_simulation import _run_simulation
 
 
@@ -26,7 +26,7 @@ def run() -> None:
     """Run Flower project."""
     typer.secho("Loading project configuration... ", fg=typer.colors.BLUE)
 
-    config, errors, warnings = flower_toml.load_and_validate_with_defaults()
+    config, errors, warnings = config_utils.load_and_validate_with_defaults()
 
     if config is None:
         typer.secho(