diff --git a/django/contrib/admin/models.py b/django/contrib/admin/models.py
index 7e21f5971d..021984160a 100644
--- a/django/contrib/admin/models.py
+++ b/django/contrib/admin/models.py
@@ -9,7 +9,6 @@
 from django.utils.text import get_text_list
 from django.utils.translation import gettext
 from django.utils.translation import gettext_lazy as _
-from django_mongodb.fields import ObjectIdField
 
 ADDITION = 1
 CHANGE = 2
@@ -64,7 +63,7 @@ class LogEntry(models.Model):
         blank=True,
         null=True,
     )
-    object_id = ObjectIdField(_("object id"), blank=True, null=True)
+    object_id = models.TextField(_("object id"), blank=True, null=True)
     # Translators: 'repr' means representation
     # (https://docs.python.org/library/functions.html#repr)
     object_repr = models.CharField(_("object repr"), max_length=200)
diff --git a/tests/generic_relations/models.py b/tests/generic_relations/models.py
index 8a1d36e790..a6021b8f16 100644
--- a/tests/generic_relations/models.py
+++ b/tests/generic_relations/models.py
@@ -12,7 +12,6 @@
 from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation
 from django.contrib.contenttypes.models import ContentType
 from django.db import models
-from django_mongodb.fields import ObjectIdField
 
 
 class TaggedItem(models.Model):
@@ -20,7 +19,7 @@ class TaggedItem(models.Model):
 
     tag = models.SlugField()
     content_type = models.ForeignKey(ContentType, models.CASCADE)
-    object_id = ObjectIdField()
+    object_id = models.TextField()
 
     content_object = GenericForeignKey()
 
@@ -41,7 +40,7 @@ class AbstractComparison(models.Model):
     content_type1 = models.ForeignKey(
         ContentType, models.CASCADE, related_name="comparative1_set"
     )
-    object_id1 = ObjectIdField()
+    object_id1 = models.TextField()
 
     first_obj = GenericForeignKey(ct_field="content_type1", fk_field="object_id1")
 
@@ -55,7 +54,7 @@ class Comparison(AbstractComparison):
     content_type2 = models.ForeignKey(
         ContentType, models.CASCADE, related_name="comparative2_set"
     )
-    object_id2 = ObjectIdField()
+    object_id2 = models.TextField()
 
     other_obj = GenericForeignKey(ct_field="content_type2", fk_field="object_id2")
 
@@ -120,20 +119,20 @@ class ValuableRock(Mineral):
 
 
 class ManualPK(models.Model):
-    id = ObjectIdField(primary_key=True)
+    id = models.TextField(primary_key=True)
     tags = GenericRelation(TaggedItem, related_query_name="manualpk")
 
 
 class ForProxyModelModel(models.Model):
     content_type = models.ForeignKey(ContentType, models.CASCADE)
-    object_id = ObjectIdField()
+    object_id = models.TextField()
     obj = GenericForeignKey(for_concrete_model=False)
     title = models.CharField(max_length=255, null=True)
 
 
 class ForConcreteModelModel(models.Model):
     content_type = models.ForeignKey(ContentType, models.CASCADE)
-    object_id = ObjectIdField()
+    object_id = models.TextField()
     obj = GenericForeignKey()
 
 
diff --git a/tests/generic_relations/tests.py b/tests/generic_relations/tests.py
index e0c6fe2db7..46da6a39a1 100644
--- a/tests/generic_relations/tests.py
+++ b/tests/generic_relations/tests.py
@@ -1,3 +1,4 @@
+from bson import ObjectId
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.contenttypes.prefetch import GenericPrefetch
 from django.core.exceptions import FieldError
@@ -44,7 +45,7 @@ def setUpTestData(cls):
 
     def comp_func(self, obj):
         # Original list of tags:
-        return obj.tag, obj.content_type.model_class(), obj.object_id
+        return obj.tag, obj.content_type.model_class(), ObjectId(obj.object_id)
 
     async def test_generic_async_acreate(self):
         await self.bacon.tags.acreate(tag="orange")