diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 304a3c440..99dd3f0f8 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -20,6 +20,9 @@ repos:
     rev: v3.17.0
     hooks:
       - id: pyupgrade
+        # TODO: Remove when Pydantic supports `datetime.date | None` type annotation.
+        #  Otherwise, `pyupgrade` will rewrite from `Optional[datetime.date]`.
+        exclude: ^src/palace/manager/api/circulation.py
         args:
           - --py310-plus
 
diff --git a/src/palace/manager/api/circulation.py b/src/palace/manager/api/circulation.py
index 605419c77..6952e080e 100644
--- a/src/palace/manager/api/circulation.py
+++ b/src/palace/manager/api/circulation.py
@@ -5,7 +5,7 @@
 import logging
 from abc import ABC, abstractmethod
 from collections.abc import Iterable, Mapping
-from typing import Literal, TypeVar
+from typing import Literal, Optional, TypeVar
 
 import flask
 import requests
@@ -564,7 +564,9 @@ class BaseCirculationApiSettings(BaseSettings):
         )
     }
 
-    subscription_activation_date: str | None = FormField(
+    # TODO: Using `Optional[datetime.date]` here because Pydantic does not
+    #  currently handle the annotation of `datetime.date | None` properly.
+    subscription_activation_date: Optional[datetime.date] = FormField(
         default=None,
         form=ConfigurationFormItem(
             label=_("Collection Subscription Activation Date"),
@@ -577,7 +579,7 @@ class BaseCirculationApiSettings(BaseSettings):
             required=False,
         ),
     )
-    subscription_expiration_date: str | None = FormField(
+    subscription_expiration_date: Optional[datetime.date] = FormField(
         default=None,
         form=ConfigurationFormItem(
             label=_("Collection Subscription Expiration Date"),