diff --git a/pipenv/vendor/ruamel/yaml/tag.py b/pipenv/vendor/ruamel/yaml/tag.py
new file mode 100644
index 00000000..7ad23fec
--- /dev/null
+++ b/pipenv/vendor/ruamel/yaml/tag.py
@@ -0,0 +1,124 @@
+# coding: utf-8
+
+"""
+In round-trip mode the original tag needs to be preserved, but the tag
+transformed based on the directives needs to be available as well.
+
+A Tag that is created during loading has a handle and a suffix.
+Not all objects loaded currently have a Tag, that .tag attribute can be None
+A Tag that is created for dumping only (on an object loaded without a tag) has a suffix
+only.
+"""
+
+from typing import Any, Dict, Optional, List, Union, Optional, Iterator  # NOQA
+
+tag_attrib = '_yaml_tag'
+
+
+class Tag:
+    """store original tag information for roundtripping"""
+
+    attrib = tag_attrib
+
+    def __init__(self, handle: Any = None, suffix: Any = None, handles: Any = None) -> None:
+        self.handle = handle
+        self.suffix = suffix
+        self.handles = handles
+        self._transform_type: Optional[bool] = None
+
+    def __repr__(self) -> str:
+        return f'{self.__class__.__name__}({self.trval!r})'
+
+    def __str__(self) -> str:
+        return f'{self.trval}'
+
+    def __hash__(self) -> int:
+        try:
+            return self._hash_id  # type: ignore
+        except AttributeError:
+            self._hash_id = res = hash((self.handle, self.suffix))
+            return res
+
+    def __eq__(self, other: Any) -> bool:
+        # other should not be a string, but the serializer sometimes provides these
+        if isinstance(other, str):
+            return self.trval == other
+        return bool(self.trval == other.trval)
+
+    def startswith(self, x: str) -> bool:
+        if self.trval is not None:
+            return self.trval.startswith(x)
+        return False
+
+    @property
+    def trval(self) -> Optional[str]:
+        try:
+            return self._trval
+        except AttributeError:
+            pass
+        if self.handle is None:
+            self._trval: Optional[str] = self.uri_decoded_suffix
+            return self._trval
+        assert self._transform_type is not None
+        if not self._transform_type:
+            # the non-round-trip case
+            self._trval = self.handles[self.handle] + self.uri_decoded_suffix
+            return self._trval
+        # round-trip case
+        if self.handle == '!!' and self.suffix in (
+            'null',
+            'bool',
+            'int',
+            'float',
+            'binary',
+            'timestamp',
+            'omap',
+            'pairs',
+            'set',
+            'str',
+            'seq',
+            'map',
+        ):
+            self._trval = self.handles[self.handle] + self.uri_decoded_suffix
+        else:
+            # self._trval = self.handle + self.suffix
+            self._trval = self.handles[self.handle] + self.uri_decoded_suffix
+        return self._trval
+
+    value = trval
+
+    @property
+    def uri_decoded_suffix(self) -> Optional[str]:
+        try:
+            return self._uri_decoded_suffix
+        except AttributeError:
+            pass
+        if self.suffix is None:
+            self._uri_decoded_suffix: Optional[str] = None
+            return None
+        res = ''
+        # don't have to check for scanner errors here
+        idx = 0
+        while idx < len(self.suffix):
+            ch = self.suffix[idx]
+            idx += 1
+            if ch != '%':
+                res += ch
+            else:
+                res += chr(int(self.suffix[idx : idx + 2], 16))
+                idx += 2
+        self._uri_decoded_suffix = res
+        return res
+
+    def select_transform(self, val: bool) -> None:
+        """
+        val: False -> non-round-trip
+             True -> round-trip
+        """
+        assert self._transform_type is None
+        self._transform_type = val
+
+    def check_handle(self) -> bool:
+        if self.handle is None:
+            return False
+        return self.handle not in self.handles
diff --git a/pipenv/vendor/tomlkit/_types.py b/pipenv/vendor/tomlkit/_types.py
new file mode 100644
index 00000000..cc1847b5
--- /dev/null
+++ b/pipenv/vendor/tomlkit/_types.py
@@ -0,0 +1,65 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+from typing import Any
+from typing import TypeVar
+
+
+WT = TypeVar("WT", bound="WrapperType")
+
+if TYPE_CHECKING:  # pragma: no cover
+    # Define _CustomList and _CustomDict as a workaround for:
+    # https://github.com/python/mypy/issues/11427
+    #
+    # According to this issue, the typeshed contains a "lie"
+    # (it adds MutableSequence to the ancestry of list and MutableMapping to
+    # the ancestry of dict) which completely messes with the type inference for
+    # Table, InlineTable, Array and Container.
+    #
+    # Importing from builtins is preferred over simple assignment, see issues:
+    # https://github.com/python/mypy/issues/8715
+    # https://github.com/python/mypy/issues/10068
+    from builtins import dict as _CustomDict  # noqa: N812
+    from builtins import float as _CustomFloat  # noqa: N812
+    from builtins import int as _CustomInt  # noqa: N812
+    from builtins import list as _CustomList  # noqa: N812
+    from typing import Callable
+    from typing import Concatenate
+    from typing import ParamSpec
+    from typing import Protocol
+
+    P = ParamSpec("P")
+
+    class WrapperType(Protocol):
+        def _new(self: WT, value: Any) -> WT:
+            ...
+
+else:
+    from collections.abc import MutableMapping
+    from collections.abc import MutableSequence
+    from numbers import Integral
+    from numbers import Real
+
+    class _CustomList(MutableSequence, list):
+        """Adds MutableSequence mixin while pretending to be a builtin list"""
+
+    class _CustomDict(MutableMapping, dict):
+        """Adds MutableMapping mixin while pretending to be a builtin dict"""
+
+    class _CustomInt(Integral, int):
+        """Adds Integral mixin while pretending to be a builtin int"""
+
+    class _CustomFloat(Real, float):
+        """Adds Real mixin while pretending to be a builtin float"""
+
+
+def wrap_method(
+    original_method: Callable[Concatenate[WT, P], Any]
+) -> Callable[Concatenate[WT, P], Any]:
+    def wrapper(self: WT, *args: P.args, **kwargs: P.kwargs) -> Any:
+        result = original_method(self, *args, **kwargs)
+        if result is NotImplemented:
+            return result
+        return self._new(result)
+
+    return wrapper