diff --git a/setup.py b/setup.py
index 4860777..e142ff8 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name="tds-django",
-    version="4.2.0",
+    version="4.2.1",
     author="Etienne Cogels",
     author_email="ecogels@users.noreply.github.com",
     description="Django backend for SQL Server using tds",
diff --git a/tds_django/base.py b/tds_django/base.py
index 91e7d60..1727b0b 100644
--- a/tds_django/base.py
+++ b/tds_django/base.py
@@ -101,6 +101,10 @@ class DatabaseWrapper(BaseDatabaseWrapper):
     def get_connection_params(self):
         settings_dict = self.settings_dict
         # TODO warnings for user
+        # skipped: as_dict use_tz bytes_to_unicode row_strategy server(?)
+        allowed_params = 'timeout login_timeout appname tds_version use_mars auth readonly load_balancer ' \
+                         'failover_partner cafile sock validate_host enc_login_only disable_connect_retry ' \
+                         'pooling use_sso'.split()
         conn_params = {
             'dsn': settings_dict['HOST'] or 'localhost',
             'port': settings_dict['PORT'] or 1433,
@@ -108,7 +112,7 @@ def get_connection_params(self):
             'user': settings_dict['USER'],
             'password': settings_dict['PASSWORD'],
             'autocommit': getattr(settings, 'AUTOCOMMIT', False),
-            'use_mars': False,
+            **{k: v for k, v in settings_dict.items() if k in allowed_params},
          }
         return conn_params