diff --git a/django-stubs/contrib/sessions/serializers.pyi b/django-stubs/contrib/sessions/serializers.pyi
index 261819a46..4ce8f4307 100644
--- a/django-stubs/contrib/sessions/serializers.pyi
+++ b/django-stubs/contrib/sessions/serializers.pyi
@@ -1,9 +1,4 @@
 from django.core.signing import JSONSerializer as BaseJSONSerializer
-from django.db.models.base import Model
 from typing_extensions import TypeAlias
 
-class PickleSerializer:
-    def dumps(self, obj: dict[str, Model]) -> bytes: ...
-    def loads(self, data: bytes) -> dict[str, Model]: ...
-
 JSONSerializer: TypeAlias = BaseJSONSerializer
diff --git a/django-stubs/core/serializers/base.pyi b/django-stubs/core/serializers/base.pyi
index 9344e9092..715400206 100644
--- a/django-stubs/core/serializers/base.pyi
+++ b/django-stubs/core/serializers/base.pyi
@@ -1,19 +1,12 @@
 from collections.abc import Collection, Iterable, Sequence
 from typing import IO, Any
 
-from _typeshed import ReadableBuffer
 from django.db.models.base import Model
 from django.db.models.fields import Field
 from django.db.models.fields.related import ForeignKey, ManyToManyField
 
 DEFER_FIELD: object
 
-class PickleSerializer:
-    protocol: int
-    def __init__(self, protocol: int | None = ...) -> None: ...
-    def dumps(self, obj: Any) -> bytes: ...
-    def loads(self, data: ReadableBuffer) -> Any: ...
-
 class SerializerDoesNotExist(KeyError): ...
 class SerializationError(Exception): ...
 
diff --git a/scripts/stubtest/allowlist_todo_django50.txt b/scripts/stubtest/allowlist_todo_django50.txt
index d1fd385a8..5eadbcdcb 100644
--- a/scripts/stubtest/allowlist_todo_django50.txt
+++ b/scripts/stubtest/allowlist_todo_django50.txt
@@ -46,7 +46,6 @@ django.contrib.messages.test
 django.contrib.redirects.migrations.0001_initial
 django.contrib.redirects.migrations.0002_alter_redirect_new_path_help_text
 django.contrib.sessions.migrations.0001_initial
-django.contrib.sessions.serializers.PickleSerializer
 django.contrib.sitemaps.PING_URL
 django.contrib.sitemaps.SitemapNotFound
 django.contrib.sitemaps.management
@@ -57,7 +56,6 @@ django.contrib.sites.migrations.0001_initial
 django.contrib.sites.migrations.0002_alter_domain_unique
 django.contrib.staticfiles.checks.E005
 django.contrib.staticfiles.checks.check_storages
-django.core.serializers.base.PickleSerializer
 django.db.backends.base.features.BaseDatabaseFeatures.delete_can_self_reference_subquery
 django.db.backends.base.features.BaseDatabaseFeatures.insert_test_table_with_defaults
 django.db.backends.base.features.BaseDatabaseFeatures.supports_default_keyword_in_bulk_insert