diff -urNp -x '*.orig' SQLAlchemy-1.3.23.org/setup.py SQLAlchemy-1.3.23/setup.py
--- SQLAlchemy-1.3.23.org/setup.py	2021-02-01 21:52:02.000000000 +0100
+++ SQLAlchemy-1.3.23/setup.py	2021-03-07 23:28:59.044650527 +0100
@@ -89,7 +89,7 @@ class PyTest(TestCommand):
     # not working at the time of this comment.
     user_options = [("pytest-args=", "a", "Arguments to pass to py.test")]
 
-    default_options = ["-n", "4", "-q", "--nomemory"]
+    default_options = ["-q", "--nomemory"]
 
     def initialize_options(self):
         TestCommand.initialize_options(self)
@@ -159,7 +159,7 @@ def run_setup(with_cext):
         cmdclass=cmdclass,
         tests_require=[
             "pytest>=2.5.2,!=3.9.1,!=3.9.2",
-            "mock",
+            "mock;python_version<'3.3'",
             "pytest-xdist",
         ],
         long_description=readme,