diff --git a/seleniumbase/core/proxy_helper.py b/seleniumbase/core/proxy_helper.py
index a97e4a82..a205f8b6 100644
--- a/seleniumbase/core/proxy_helper.py
+++ b/seleniumbase/core/proxy_helper.py
@@ -27,7 +27,11 @@ def create_proxy_ext(
     if not bypass_list:
         bypass_list = ""
     if proxy_string:
-        proxy_host = proxy_string.split(":")[0]
+        proxy_protocol = ""
+        if proxy_string.count("://") == 1:
+            proxy_protocol = proxy_string.split("://")[0] + "://"
+            proxy_string = proxy_string.split("://")[1]
+        proxy_host = proxy_protocol + proxy_string.split(":")[0]
         proxy_port = proxy_string.split(":")[1]
         background_js = (
             """var config = {\n"""
diff --git a/seleniumbase/fixtures/base_case.py b/seleniumbase/fixtures/base_case.py
index 956aa3d4..5c8935d1 100644
--- a/seleniumbase/fixtures/base_case.py
+++ b/seleniumbase/fixtures/base_case.py
@@ -199,22 +199,17 @@ class BaseCase(unittest.TestCase):
         Eg. "python my_test.py" instead of "pytest my_test.py"."""
         if name == "__main__":  # Test called with "python"
             import subprocess
-            from pytest import main as pytest_main
             all_args = []
             for arg in args:
                 all_args.append(arg)
             for arg in sys.argv[1:]:
                 all_args.append(arg)
-            multi = False
-            for arg in all_args:
-                if arg.startswith("-n") or arg.startswith("--numprocesses"):
-                    multi = True
-            if multi:
-                subprocess.call(
-                    [sys.executable, "-m", "pytest", file, "-s", *all_args]
-                )
-            else:
-                pytest_main([file, "-s", *all_args])
+            # See: https://stackoverflow.com/a/54666289/7058266
+            # from pytest import main as pytest_main
+            # pytest_main([file, "-s", *all_args])
+            subprocess.call(
+                [sys.executable, "-m", "pytest", file, "-s", *all_args]
+            )
 
     def open(self, url):
         """Navigates the current browser window to the specified page."""
@@ -13586,15 +13581,6 @@ class BaseCase(unittest.TestCase):
 
     ############
 
-    @decorators.deprecated("The Driver Manager prevents old drivers.")
-    def is_chromedriver_too_old(self):
-        """Before chromedriver 73, there was no version check, which
-        means it's possible to run a new Chrome with old drivers."""
-        self.__fail_if_not_using_chrome("is_chromedriver_too_old()")
-        if int(self.get_chromedriver_version().split(".")[0]) < 73:
-            return True  # chromedriver is too old! Please upgrade!
-        return False
-
     @decorators.deprecated("You should use re.escape() instead.")
     def jq_format(self, code):
         # DEPRECATED - re.escape() already performs this action.