diff --git a/confirmation/models.py b/confirmation/models.py
index 5409e7637f..fdb343f8e4 100644
--- a/confirmation/models.py
+++ b/confirmation/models.py
@@ -76,7 +76,7 @@ ZilencerConfirmationObjT: TypeAlias = Union[
     "PreregistrationRemoteRealmBillingUser",
 ]
 
-ConfirmationObjT = Union[NoZilencerConfirmationObjT, ZilencerConfirmationObjT]
+ConfirmationObjT: TypeAlias = Union[NoZilencerConfirmationObjT, ZilencerConfirmationObjT]
 
 
 def get_object_from_key(
diff --git a/corporate/views/remote_billing_page.py b/corporate/views/remote_billing_page.py
index 124c70fd67..41bda0279b 100644
--- a/corporate/views/remote_billing_page.py
+++ b/corporate/views/remote_billing_page.py
@@ -15,6 +15,7 @@ from django.utils.translation import get_language
 from django.utils.translation import gettext as _
 from django.views.decorators.csrf import csrf_exempt
 from pydantic import Json
+from typing_extensions import TypeAlias
 
 from confirmation.models import (
     Confirmation,
@@ -71,7 +72,9 @@ billing_logger = logging.getLogger("corporate.stripe")
 
 
 VALID_NEXT_PAGES = [None, "sponsorship", "upgrade", "billing", "plans", "deactivate"]
-VALID_NEXT_PAGES_TYPE = Literal[None, "sponsorship", "upgrade", "billing", "plans", "deactivate"]
+VALID_NEXT_PAGES_TYPE: TypeAlias = Literal[
+    None, "sponsorship", "upgrade", "billing", "plans", "deactivate"
+]
 
 REMOTE_BILLING_SIGNED_ACCESS_TOKEN_VALIDITY_IN_SECONDS = 2 * 60 * 60
 # We use units of hours here so that we can pass this through to the
diff --git a/zerver/tests/test_typed_endpoint.py b/zerver/tests/test_typed_endpoint.py
index d77c9fc147..a0d9e719ed 100644
--- a/zerver/tests/test_typed_endpoint.py
+++ b/zerver/tests/test_typed_endpoint.py
@@ -6,7 +6,7 @@ from django.http import HttpRequest, HttpResponse
 from pydantic import BaseModel, ConfigDict, Json, StringConstraints, ValidationInfo, WrapValidator
 from pydantic.dataclasses import dataclass
 from pydantic.functional_validators import ModelWrapValidatorHandler
-from typing_extensions import Annotated, override
+from typing_extensions import Annotated, TypeAlias, override
 
 from zerver.lib.exceptions import ApiParamValidationError, JsonableError
 from zerver.lib.request import RequestConfusingParamsError, RequestVariableMissingError
@@ -26,7 +26,7 @@ from zerver.lib.typed_endpoint import (
 from zerver.lib.validator import WildValue, check_bool
 from zerver.models import UserProfile
 
-ParamTypes = Literal["none", "json_only", "both"]
+ParamTypes: TypeAlias = Literal["none", "json_only", "both"]
 T = TypeVar("T")