diff --git a/pipenv/utils/resolver.py b/pipenv/utils/resolver.py
index 8fdbd91f..653bc265 100644
--- a/pipenv/utils/resolver.py
+++ b/pipenv/utils/resolver.py
@@ -363,6 +363,7 @@ class Resolver:
                     and is_installable_dir(parsed_line.path)
                 )
             ):
+                setup_info.run_pyproject()
                 setup_info.run_setup()
                 requirements = [v for v in getattr(setup_info, "requires", {}).values()]
                 if req.extras:
diff --git a/pipenv/vendor/requirementslib/models/setup_info.py b/pipenv/vendor/requirementslib/models/setup_info.py
index 69306d37..8e37360f 100644
--- a/pipenv/vendor/requirementslib/models/setup_info.py
+++ b/pipenv/vendor/requirementslib/models/setup_info.py
@@ -1018,9 +1018,8 @@ def get_metadata(path, pkg_name=None, metadata_type=None):
     wheel_allowed = metadata_type == "wheel" or metadata_type is None
     egg_allowed = metadata_type == "egg" or metadata_type is None
     dist = None  # type: Optional[Union[DistInfoDistribution, EggInfoDistribution]]
-    if wheel_allowed:
-        dist = get_distinfo_dist(path, pkg_name=pkg_name)
-    if egg_allowed and dist is None:
+    dist = get_distinfo_dist(path, pkg_name=pkg_name)
+    if dist is None:
         dist = get_egginfo_dist(path, pkg_name=pkg_name)
     if dist is not None:
         return get_metadata_from_dist(dist)
@@ -1590,17 +1589,18 @@ build-backend = "{1}"
         if self.pyproject and self.pyproject.exists():
             result = get_pyproject(self.pyproject.parent)
             if result is not None:
-                requires, backend = result
                 if self.build_requires is None:
                     self.build_requires = ()
-                if backend:
-                    self.build_backend = backend
+                if result.get("build_backend"):
+                    self.build_backend = result.get("build_backend")
                 else:
                     self.build_backend = get_default_pyproject_backend()
-                if requires:
-                    self.build_requires = tuple(set(requires) | set(self.build_requires))
+                if result.get("build_requires"):
+                    self.build_requires = tuple(set(result.get("build_requires", [])) | set(self.build_requires))
                 else:
                     self.build_requires = ("setuptools", "wheel")
+                if result.get("dependencies"):
+                    self._requirements += make_base_requirements(tuple(set(result.get("dependencies", []))))
         return self
 
     def get_initial_info(self) -> Dict[str, Any]:
diff --git a/pipenv/vendor/requirementslib/models/utils.py b/pipenv/vendor/requirementslib/models/utils.py
index 111935ca..319b27b2 100644
--- a/pipenv/vendor/requirementslib/models/utils.py
+++ b/pipenv/vendor/requirementslib/models/utils.py
@@ -441,47 +441,46 @@ def get_default_pyproject_backend():
     return "setuptools.build_meta"
 
 
-def get_pyproject(path):
-    # type: (Union[STRING_TYPE, Path]) -> Optional[Tuple[List[STRING_TYPE], STRING_TYPE]]
-    """Given a base path, look for the corresponding ``pyproject.toml`` file
+def get_pyproject(path: Union[AnyStr, Path]) -> Optional[Dict[str, Union[List[AnyStr], AnyStr]]]:
+    """
+    Given a base path, look for the corresponding ``pyproject.toml`` file
     and return its build_requires and build_backend.
 
-    :param AnyStr path: The root path of the project, should be a directory (will be truncated)
-    :return: A 2 tuple of build requirements and the build backend
-    :rtype: Optional[Tuple[List[AnyStr], AnyStr]]
+    :param path: The root path of the project, should be a directory (will be truncated)
+    :return: A dictionary with build requirements, build backend, and dependencies
     """
     if not path:
         return
 
     if not isinstance(path, Path):
         path = Path(path)
+
     if not path.is_dir():
         path = path.parent
-    pp_toml = path.joinpath("pyproject.toml")
-    setup_py = path.joinpath("setup.py")
-    if not pp_toml.exists():
-        if not setup_py.exists():
-            return None
-        requires = ["setuptools>=40.8", "wheel"]
-        backend = get_default_pyproject_backend()
-    else:
-        pyproject_data = {}
-        with open(pp_toml.as_posix(), encoding="utf-8") as fh:
+
+    pp_toml = path / "pyproject.toml"
+
+    # Default values
+    requires = ["setuptools>=40.8", "wheel"]
+    backend = get_default_pyproject_backend()
+    dependencies = []
+
+    if pp_toml.exists():
+        with open(pp_toml, encoding="utf-8") as fh:
             pyproject_data = tomlkit.loads(fh.read())
+
+        # Extracting build system information
         build_system = pyproject_data.get("build-system", None)
-        if build_system is None:
-            if setup_py.exists():
-                requires = ["setuptools>=40.8", "wheel"]
-                backend = get_default_pyproject_backend()
-            else:
-                requires = ["setuptools>=40.8", "wheel"]
-                backend = get_default_pyproject_backend()
-            build_system = {"requires": requires, "build-backend": backend}
-            pyproject_data["build_system"] = build_system
-        else:
-            requires = build_system.get("requires", ["setuptools>=40.8", "wheel"])
-            backend = build_system.get("build-backend", get_default_pyproject_backend())
-    return requires, backend
+        if build_system is not None:
+            requires = build_system.get("requires", requires)
+            backend = build_system.get("build-backend", backend)
+
+        # Extracting project dependencies
+        project_data = pyproject_data.get("project", None)
+        if project_data is not None:
+            dependencies = project_data.get("dependencies", [])
+
+    return {"build_requires": requires, "build_backend": backend, "dependencies": dependencies}
 
 
 def split_markers_from_line(line):