diff --git a/setup.py b/setup.py
index 40f0023..ffef5ea 100755
--- a/setup.py
+++ b/setup.py
@@ -23,6 +23,7 @@ import shutil
 import subprocess
 import re
 import pathlib
+import pip
 import zipfile
 
 from distutils import log
@@ -121,9 +122,8 @@ class BuildWheels(Command):
 
     def download_wheel(self, requirement):
         """Downloads a wheel from PyPI and saves it in self.wheels_path."""
-
-        subprocess.check_call([
-            'pip', 'download',
+        pip.main([
+            'download',
             '--no-deps',
             '--dest', str(self.wheels_path),
             requirement[0]