diff --git a/run_integration_tests.py b/run_integration_tests.py
index 9f670b5c..64e5b856 100755
--- a/run_integration_tests.py
+++ b/run_integration_tests.py
@@ -10,7 +10,7 @@ from importlib import import_module
 from pathlib import Path
 
 
-def run_tests(filenames=None):
+def run_tests(filenames=None, debug=False):
     """
     Find and run all tests in the tests/ directory.
 
@@ -33,9 +33,12 @@ def run_tests(filenames=None):
     tests = unittest.TestSuite(suites)
     runner = unittest.TextTestRunner(verbosity=2)
 
-    # Disable logging output
-    logging.basicConfig(level=100)
-    logging.disable(100)
+    if debug:
+        logging.basicConfig(level='DEBUG')
+    else:
+        # Disable logging output
+        logging.basicConfig(level=100)
+        logging.disable(100)
 
     result = runner.run(tests)
     return result
@@ -60,9 +63,10 @@ class TestCommand(Command):
 if __name__ == '__main__':
     parser = ArgumentParser(description='Run unit tests.')
     parser.add_argument('tests', metavar='TEST', nargs='*', help='list of tests to run, or nothing to run them all')
+    parser.add_argument('-d', '--debug', action='store_true', dest='debug', default=False, help='enable debug output')
     args = parser.parse_args()
 
-    result = run_tests(args.tests)
+    result = run_tests(args.tests, args.debug)
     print("<tests %s ran='%s' errors='%s' fails='%s' success='%s'/>" % (
         "xmlns='http//andyet.net/protocol/tests'",
         result.testsRun, len(result.errors),