diff --git a/python_modules/dagster/dagster/_core/definitions/time_window_partitions.py b/python_modules/dagster/dagster/_core/definitions/time_window_partitions.py
index a1f2e9632d5df..b97b4852261fd 100644
--- a/python_modules/dagster/dagster/_core/definitions/time_window_partitions.py
+++ b/python_modules/dagster/dagster/_core/definitions/time_window_partitions.py
@@ -27,11 +27,10 @@
 import dagster._check as check
 from dagster._annotations import PublicAttr, public
 from dagster._core.instance import DynamicPartitionsStore
-from dagster._serdes import whitelist_for_serdes
 from dagster._serdes import (
     whitelist_for_serdes,
 )
-from dagster._serdes.serdes import FieldSerializer
+from dagster._serdes.serdes import FieldSerializer, deserialize_value, serialize_value
 from dagster._utils import utc_datetime_from_timestamp
 from dagster._utils.cached_method import cached_method
 from dagster._utils.partitions import DEFAULT_HOURLY_FORMAT_WITHOUT_TIMEZONE
@@ -1858,7 +1857,25 @@ def resolve(self) -> "TimeWindowPartitionsSubset":
         )
 
 
-@whitelist_for_serdes
+class TimeWindowPartitionsDefinitionSerializer(FieldSerializer):
+    """Serializes a TimeWindowPartitionsDefinition by converting it to a SerializableTimeWindowPartitionsDefinition."""
+
+    def pack(self, partitions_def: TimeWindowPartitionsDefinition, **_kwargs) -> str:
+        return serialize_value(partitions_def.to_serializable_time_window_partitions_def())
+
+    def unpack(
+        self,
+        serialized_time_window_partitions_def: str,
+        **_kwargs,
+    ) -> TimeWindowPartitionsDefinition:
+        return deserialize_value(
+            serialized_time_window_partitions_def, SerializableTimeWindowPartitionsDefinition
+        ).to_time_window_partitions_def()
+
+
+@whitelist_for_serdes(
+    field_serializers={"partitions_def": TimeWindowPartitionsDefinitionSerializer}
+)
 class TimeWindowPartitionsSubset(
     BaseTimeWindowPartitionsSubset,
     NamedTuple(