diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c9396b07..dc8bd208 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
-        python: [ 3.7, 3.9]
+        python: [ 3.7, 3.9, 3.13]
         splunk-version:
           - "8.1"
           - "8.2"
diff --git a/setup.py b/setup.py
index c80ddf37..d19a09eb 100755
--- a/setup.py
+++ b/setup.py
@@ -14,124 +14,15 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from setuptools import setup, Command
-
-import os
-import sys
+from setuptools import setup
 
 import splunklib
 
-failed = False
-
-def run_test_suite():
-    import unittest
-
-    def mark_failed():
-        global failed
-        failed = True
-
-    class _TrackingTextTestResult(unittest._TextTestResult):
-        def addError(self, test, err):
-            unittest._TextTestResult.addError(self, test, err)
-            mark_failed()
-
-        def addFailure(self, test, err):
-            unittest._TextTestResult.addFailure(self, test, err)
-            mark_failed()
-
-    class TrackingTextTestRunner(unittest.TextTestRunner):
-        def _makeResult(self):
-            return _TrackingTextTestResult(
-                self.stream, self.descriptions, self.verbosity)
-
-    original_cwd = os.path.abspath(os.getcwd())
-    os.chdir('tests')
-    suite = unittest.defaultTestLoader.discover('.')
-    runner = TrackingTextTestRunner(verbosity=2)
-    runner.run(suite)
-    os.chdir(original_cwd)
-
-    return failed
-
-
-def run_test_suite_with_junit_output():
-    try:
-        import unittest2 as unittest
-    except ImportError:
-        import unittest
-    import xmlrunner
-    original_cwd = os.path.abspath(os.getcwd())
-    os.chdir('tests')
-    suite = unittest.defaultTestLoader.discover('.')
-    xmlrunner.XMLTestRunner(output='../test-reports').run(suite)
-    os.chdir(original_cwd)
-
-
-class CoverageCommand(Command):
-    """setup.py command to run code coverage of the test suite."""
-    description = "Create an HTML coverage report from running the full test suite."
-    user_options = []
-
-    def initialize_options(self):
-        pass
-
-    def finalize_options(self):
-        pass
-
-    def run(self):
-        try:
-            import coverage
-        except ImportError:
-            print("Could not import coverage. Please install it and try again.")
-            exit(1)
-        cov = coverage.coverage(source=['splunklib'])
-        cov.start()
-        run_test_suite()
-        cov.stop()
-        cov.html_report(directory='coverage_report')
-
-
-class TestCommand(Command):
-    """setup.py command to run the whole test suite."""
-    description = "Run test full test suite."
-    user_options = []
-
-    def initialize_options(self):
-        pass
-
-    def finalize_options(self):
-        pass
-
-    def run(self):
-        failed = run_test_suite()
-        if failed:
-            sys.exit(1)
-
-
-class JunitXmlTestCommand(Command):
-    """setup.py command to run the whole test suite."""
-    description = "Run test full test suite with JUnit-formatted output."
-    user_options = []
-
-    def initialize_options(self):
-        pass
-
-    def finalize_options(self):
-        pass
-
-    def run(self):
-        run_test_suite_with_junit_output()
-
-
 setup(
     author="Splunk, Inc.",
 
     author_email="devinfo@splunk.com",
 
-    cmdclass={'coverage': CoverageCommand,
-              'test': TestCommand,
-              'testjunit': JunitXmlTestCommand},
-
     description="The Splunk Software Development Kit for Python.",
 
     license="http://www.apache.org/licenses/LICENSE-2.0",
diff --git a/tests/modularinput/test_script.py b/tests/modularinput/test_script.py
index bb471710..49c25972 100644
--- a/tests/modularinput/test_script.py
+++ b/tests/modularinput/test_script.py
@@ -252,6 +252,7 @@ def stream_events(self, inputs, ew):
     # Remove paths and line numbers
     err = re.sub(r'File "[^"]+', 'File "...', err.getvalue())
     err = re.sub(r'line \d+', 'line 123', err)
+    err = re.sub(r' +~+\^+', '', err)
 
     assert out.getvalue() == ""
     assert err == (
diff --git a/tox.ini b/tox.ini
index e45dbfb9..e69c2e6a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = clean,docs,py37,py39
+envlist = clean,docs,py37,py39,313
 skipsdist = {env:TOXBUILD:false}
 
 [testenv:pep8]
@@ -28,8 +28,6 @@ setenv = SPLUNK_HOME=/opt/splunk
 allowlist_externals = make
 deps = pytest
        pytest-cov
-       xmlrunner
-       unittest-xml-reporting
        python-dotenv
 
 distdir = build