diff --git a/django_mongodb_backend/utils.py b/django_mongodb_backend/utils.py
index 194c4698c..ced60bc8e 100644
--- a/django_mongodb_backend/utils.py
+++ b/django_mongodb_backend/utils.py
@@ -28,7 +28,7 @@ def check_django_compatability():
         )
 
 
-def parse_uri(uri, *, db_name=None, conn_max_age=0, test=None):
+def parse_uri(uri, *, db_name=None, test=None):
     """
     Convert the given uri into a dictionary suitable for Django's DATABASES
     setting.
@@ -56,7 +56,6 @@ def parse_uri(uri, *, db_name=None, conn_max_age=0, test=None):
         "USER": uri.get("username"),
         "PASSWORD": uri.get("password"),
         "OPTIONS": uri.get("options"),
-        "CONN_MAX_AGE": conn_max_age,
     }
     if "authSource" not in settings_dict["OPTIONS"] and uri["database"]:
         settings_dict["OPTIONS"]["authSource"] = uri["database"]
diff --git a/docs/source/ref/utils.rst b/docs/source/ref/utils.rst
index a5fb8ff3e..a05ad8b70 100644
--- a/docs/source/ref/utils.rst
+++ b/docs/source/ref/utils.rst
@@ -12,7 +12,7 @@ following parts can be considered stable.
 ``parse_uri()``
 ===============
 
-.. function:: parse_uri(uri, db_name=None, conn_max_age=0, test=None)
+.. function:: parse_uri(uri, db_name=None, test=None)
 
 Parses a MongoDB `connection string`_ into a dictionary suitable for Django's
 :setting:`DATABASES` setting.
@@ -32,8 +32,6 @@ doesn't specify ``defaultauthdb``.
 You can use the parameters to customize the resulting :setting:`DATABASES`
 setting:
 
-- Use ``conn_max_age`` to configure :ref:`persistent database connections
-  <persistent-database-connections>`.
 - Use ``test`` to provide a dictionary of settings for test databases in the
   format of :setting:`TEST <DATABASE-TEST>`.
 
diff --git a/docs/source/releases/5.2.x.rst b/docs/source/releases/5.2.x.rst
index 9a31f3e74..bad12733e 100644
--- a/docs/source/releases/5.2.x.rst
+++ b/docs/source/releases/5.2.x.rst
@@ -27,6 +27,9 @@ Backwards incompatible changes
 ------------------------------
 
 - The minimum supported version of ``pymongo`` is increased from 4.6 to 4.7.
+- The ``conn_max_age`` parameter of
+  :func:`~django_mongodb_backend.utils.parse_uri` is removed because persistent
+  connections are now used by default.
 
 Bug fixes
 ---------
diff --git a/tests/backend_/utils/test_parse_uri.py b/tests/backend_/utils/test_parse_uri.py
index c2c015b41..3198a4630 100644
--- a/tests/backend_/utils/test_parse_uri.py
+++ b/tests/backend_/utils/test_parse_uri.py
@@ -82,10 +82,6 @@ def test_auth_source_in_query_string_overrides_defaultauthdb(self):
         self.assertEqual(settings_dict["NAME"], "db")
         self.assertEqual(settings_dict["OPTIONS"], {"authSource": "auth"})
 
-    def test_conn_max_age(self):
-        settings_dict = parse_uri("mongodb://localhost/db", conn_max_age=600)
-        self.assertEqual(settings_dict["CONN_MAX_AGE"], 600)
-
     def test_test_kwarg(self):
         settings_dict = parse_uri("mongodb://localhost/db", test={"NAME": "test_db"})
         self.assertEqual(settings_dict["TEST"], {"NAME": "test_db"})