diff --git a/lib-python/3/ensurepip/__init__.py b/lib-python/3/ensurepip/__init__.py
index 6b35b3d..97fc83b 100644
--- a/lib-python/3/ensurepip/__init__.py
+++ b/lib-python/3/ensurepip/__init__.py
@@ -1,16 +1,34 @@
+import distutils.version
+import glob
 import os
 import os.path
 import pkgutil
 import sys
+import runpy
 import tempfile


 __all__ = ["version", "bootstrap"]


-_SETUPTOOLS_VERSION = "44.0.0"
+_WHEEL_DIR = "/usr/share/python-wheels/"

-_PIP_VERSION = "20.0.2"
+_wheels = {}
+
+def _get_most_recent_wheel_version(pkg):
+    prefix = os.path.join(_WHEEL_DIR, "{}-".format(pkg))
+    _wheels[pkg] = {}
+    for suffix in "-py2.py3-none-any.whl", "-py3-none-any.whl":
+        pattern = "{}*{}".format(prefix, suffix)
+        for path in glob.glob(pattern):
+            version_str = path[len(prefix):-len(suffix)]
+            _wheels[pkg][version_str] = os.path.basename(path)
+    return str(max(_wheels[pkg], key=distutils.version.LooseVersion))
+
+
+_SETUPTOOLS_VERSION = _get_most_recent_wheel_version("setuptools")
+
+_PIP_VERSION = _get_most_recent_wheel_version("pip")

 _PROJECTS = [
     ("setuptools", _SETUPTOOLS_VERSION),
@@ -23,10 +41,18 @@ def _run_pip(args, additional_paths=None):
     if additional_paths is not None:
         sys.path = additional_paths + sys.path

-    # Install the bundled software
-    import pip._internal.cli.main
-    return pip._internal.cli.main.main(args)
+    # Invoke pip as if it's the main module, and catch the exit.
+    backup_argv = sys.argv[:]
+    sys.argv[1:] = args
+    try:
+        # run_module() alters sys.modules and sys.argv, but restores them at exit
+        runpy.run_module("pip", run_name="__main__", alter_sys=True)
+    except SystemExit as exc:
+        return exc.code
+    finally:
+        sys.argv[:] = backup_argv

+    raise SystemError("pip did not exit, this should never happen")

 def version():
     """
@@ -93,13 +119,10 @@ def _bootstrap(*, root=None, upgrade=False, user=False,
         # additional paths that need added to sys.path
         additional_paths = []
         for project, version in _PROJECTS:
-            wheel_name = "{}-{}-py2.py3-none-any.whl".format(project, version)
-            whl = pkgutil.get_data(
-                "ensurepip",
-                "_bundled/{}".format(wheel_name),
-            )
-            with open(os.path.join(tmpdir, wheel_name), "wb") as fp:
-                fp.write(whl)
+            wheel_name = _wheels[project][version]
+            with open(os.path.join(_WHEEL_DIR, wheel_name), "rb") as sfp:
+                with open(os.path.join(tmpdir, wheel_name), "wb") as fp:
+                    fp.write(sfp.read())

             additional_paths.append(os.path.join(tmpdir, wheel_name))