diff --git a/mina/backend/__init__.py b/mina/backend/__init__.py
index 94c2f6d..21185b8 100644
--- a/mina/backend/__init__.py
+++ b/mina/backend/__init__.py
@@ -5,14 +5,22 @@
 from pathlib import Path
 from typing import Any, Dict, Mapping, Optional
 
-from pdm.pep517._vendor import tomli
+try:
+    import tomllib as tomli  # type: ignore
+except ImportError:
+    try:
+        from pdm.pep517._vendor import tomli
+    except ImportError:
+        import tomli
+
 from pdm.pep517._vendor.packaging.requirements import Requirement
 from pdm.pep517.api import _prepare_metadata
-from pdm.pep517.api import get_requires_for_build_sdist as get_requires_for_build_sdist
-from pdm.pep517.api import get_requires_for_build_wheel as get_requires_for_build_wheel
-from pdm.pep517.api import (
-    prepare_metadata_for_build_wheel as prepare_metadata_for_build_wheel,
-)
+from pdm.pep517.api import \
+    get_requires_for_build_sdist as get_requires_for_build_sdist
+from pdm.pep517.api import \
+    get_requires_for_build_wheel as get_requires_for_build_wheel
+from pdm.pep517.api import \
+    prepare_metadata_for_build_wheel as prepare_metadata_for_build_wheel
 from pdm.pep517.base import Builder
 from pdm.pep517.editable import EditableBuilder
 from pdm.pep517.metadata import Config, Metadata
@@ -23,7 +31,7 @@
 @functools.lru_cache(None)
 def _get_config_root():
     cwd = Path.cwd()
-    return tomli.loads((cwd / "pyproject.toml").read_text(encoding='utf-8'))
+    return tomli.loads((cwd / "pyproject.toml").read_text(encoding="utf-8"))
 
 
 @functools.lru_cache(None)
@@ -103,7 +111,9 @@ def _patch_dep(_meta: Metadata, pkg_project: dict[str, Any]):
                 if req.name is None:
                     raise ValueError(f"'{dep}' is not a valid requirement")
                 if req.name not in workspace_deps:
-                    raise ValueError(f"{req.name} is not defined in project requirements")
+                    raise ValueError(
+                        f"{req.name} is not defined in project requirements"
+                    )
                 group_deps.append(str(workspace_deps[req.name]))
             optional_dependencies[group] = group_deps
 
@@ -116,7 +126,7 @@ def _patch_pdm_metadata(package: str):
     cwd = Path.cwd()
     _meta = Builder(cwd).meta
 
-    config = tomli.loads((cwd / "pyproject.toml").read_text(encoding='utf-8'))
+    config = tomli.loads((cwd / "pyproject.toml").read_text(encoding="utf-8"))
 
     package_conf = (
         config.get("tool", {}).get("mina", {}).get("packages", {}).get(package, None)
diff --git a/mina/commands/build.py b/mina/commands/build.py
index 247b963..1f9d73d 100644
--- a/mina/commands/build.py
+++ b/mina/commands/build.py
@@ -5,7 +5,13 @@
 import sys
 from pathlib import Path
 
-import tomli
+try:
+    import tomllib as tomli  # type: ignore
+except ImportError:
+    try:
+        from pdm.pep517._vendor import tomli
+    except ImportError:
+        import tomli
 from pdm.builders.sdist import SdistBuilder
 from pdm.builders.wheel import WheelBuilder
 from pdm.cli.commands.base import BaseCommand
@@ -120,7 +126,9 @@ def handle(self, project: Project, options: MinaCommandNamespace):
         if not (project.root / "pyproject.toml").exists():
             project.core.ui.echo("No pyproject.toml found.", err=True)
             sys.exit(1)
-        pyproj = tomli.loads((project.root / "pyproject.toml").read_text(encoding='utf-8'))
+        pyproj = tomli.loads(
+            (project.root / "pyproject.toml").read_text(encoding="utf-8")
+        )
         mina_packages = pyproj.get("tool", {}).get("mina", {}).get("packages", [])
         packages = options.packages
 
diff --git a/mina/commands/list.py b/mina/commands/list.py
index 0d42562..3f3f0d1 100644
--- a/mina/commands/list.py
+++ b/mina/commands/list.py
@@ -1,7 +1,13 @@
 import sys
 from argparse import Namespace
 
-import tomli
+try:
+    import tomllib as tomli  # type: ignore
+except ImportError:
+    try:
+        from pdm.pep517._vendor import tomli
+    except ImportError:
+        import tomli
 from pdm.cli.commands.base import BaseCommand
 from pdm.project.core import Project
 
@@ -11,7 +17,9 @@ def handle(self, project: Project, options: Namespace):
         if not (project.root / "pyproject.toml").exists():
             project.core.ui.echo("No pyproject.toml found.", err=True)
             sys.exit(1)
-        pyproj = tomli.loads((project.root / "pyproject.toml").read_text(encoding='utf-8'))
+        pyproj = tomli.loads(
+            (project.root / "pyproject.toml").read_text(encoding="utf-8")
+        )
         mina_packages = pyproj.get("tool", {}).get("mina", {}).get("packages", [])
         if not mina_packages:
             project.core.ui.echo(
diff --git a/pyproject.toml b/pyproject.toml
index 4fed2df..745df97 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,6 +10,7 @@ dependencies = [
     "pdm-pep517>=1.0.1",
     "mina-build>=0.2.1",
     "twine>=4.0.0",
+    "tomli>=1.1.0; python_version < \"3.11\""
 ]
 requires-python = ">=3.9"
 readme = "README.md"
@@ -49,13 +50,14 @@ raw-dependencies = []
 
 [tool.mina.packages."backend".project]
 name = "mina-build"
-version = "0.2.8"
+version = "0.2.9"
 description = "build backend for Mina Package Structure"
 authors = [
     {name = "GreyElaina", email = "GreyElaina@outlook.com"},
 ]
 dependencies = [
     "pdm-pep517",
+    "tomli"
 ]
 requires-python = ">=3.9"
 readme = "README.build.md"
@@ -72,10 +74,11 @@ excludes = [
 
 [tool.mina.packages."cli-pdm".project]
 name = "pdm-mina"
-version = "0.2.0"
+version = "0.2.1"
 dependencies = [
     "pdm",
     "mina-build",
+    "tomli"
 ]
 requires-python = ">=3.9"
 readme = "README.md"