diff --git a/pkg_resources/__init__.py b/pkg_resources/__init__.py
index d47df3f3c5f..4b7887e9f4e 100644
--- a/pkg_resources/__init__.py
+++ b/pkg_resources/__init__.py
@@ -74,6 +74,8 @@
 
 import _imp
 
+sys.path.append(os.path.dirname(__file__) + '/_vendor')
+
 # capture these to bypass sandboxing
 from os import utime
 from os import open as os_open
@@ -87,16 +89,16 @@
     # no write support, probably under GAE
     WRITE_SUPPORT = False
 
-from pkg_resources.extern.jaraco.text import (
+from jaraco.text import (
     yield_lines,
     drop_comment,
     join_continuation,
 )
-from pkg_resources.extern.packaging import markers as _packaging_markers
-from pkg_resources.extern.packaging import requirements as _packaging_requirements
-from pkg_resources.extern.packaging import utils as _packaging_utils
-from pkg_resources.extern.packaging import version as _packaging_version
-from pkg_resources.extern.platformdirs import user_cache_dir as _user_cache_dir
+from packaging import markers as _packaging_markers
+from packaging import requirements as _packaging_requirements
+from packaging import utils as _packaging_utils
+from packaging import version as _packaging_version
+from platformdirs import user_cache_dir as _user_cache_dir
 
 if TYPE_CHECKING:
     from _typeshed import BytesPath, StrPath, StrOrBytesPath
diff --git a/pkg_resources/tests/test_resources.py b/pkg_resources/tests/test_resources.py
index 826d691b83d..9837c2719d9 100644
--- a/pkg_resources/tests/test_resources.py
+++ b/pkg_resources/tests/test_resources.py
@@ -5,7 +5,7 @@
 import itertools
 
 import pytest
-from pkg_resources.extern.packaging.specifiers import SpecifierSet
+from packaging.specifiers import SpecifierSet
 
 import pkg_resources
 from pkg_resources import (