diff --git a/pyproject.toml b/pyproject.toml
index 9a79e55..8725d19 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,6 @@ exclude = '''
 ( __pycache__
 | ^/.tox
 | ^/versioneer.py
-| ^/src/debugpy/_vendored
 | ^/src/debugpy/_version.py
 )
 '''
diff --git a/setup.py b/setup.py
index 3abc811..c11924c 100644
--- a/setup.py
+++ b/setup.py
@@ -18,12 +18,10 @@ del sys.path[0]
 
 sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), "src"))
 import debugpy
-import debugpy._vendored
 
 del sys.path[0]
 
 
-PYDEVD_ROOT = debugpy._vendored.project_root("pydevd")
 DEBUGBY_ROOT = os.path.dirname(os.path.abspath(debugpy.__file__))
 
 
@@ -146,8 +144,6 @@ if __name__ == "__main__":
         extras["platforms"] = platforms
 
     cmds = versioneer.get_cmdclass()
-    override_build(cmds)
-    override_build_py(cmds)
 
     setuptools.setup(
         name="debugpy",
@@ -183,14 +179,9 @@ if __name__ == "__main__":
             "debugpy.common",
             "debugpy.launcher",
             "debugpy.server",
-            "debugpy._vendored",
         ],
         package_data={
             "debugpy": ["ThirdPartyNotices.txt"],
-            "debugpy._vendored": [
-                # pydevd extensions must be built before this list can be computed properly,
-                # so it is populated in the overridden build_py.finalize_options().
-            ],  
         },
         ext_modules=ExtModules(),
         has_ext_modules=lambda: True,
diff --git a/src/debugpy/server/__init__.py b/src/debugpy/server/__init__.py
index 42d5367..e333dcf 100644
--- a/src/debugpy/server/__init__.py
+++ b/src/debugpy/server/__init__.py
@@ -1,7 +1,3 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License. See LICENSE in the project root
 # for license information.
-
-# "force_pydevd" must be imported first to ensure (via side effects)
-# that the debugpy-vendored copy of pydevd gets used.
-import debugpy._vendored.force_pydevd  # noqa
diff --git a/src/debugpy/server/attach_pid_injected.py b/src/debugpy/server/attach_pid_injected.py
index a8df6e1..a29a969 100644
--- a/src/debugpy/server/attach_pid_injected.py
+++ b/src/debugpy/server/attach_pid_injected.py
@@ -31,7 +31,6 @@ def attach(setup):
                 pydevd_attach_to_process_path = os.path.join(
                     _debugpy_dir,
                     "debugpy",
-                    "_vendored",
                     "pydevd",
                     "pydevd_attach_to_process",
                 )