diff --git a/pyiceberg/table/update/__init__.py b/pyiceberg/table/update/__init__.py
index 455b46953c..e892b838c9 100644
--- a/pyiceberg/table/update/__init__.py
+++ b/pyiceberg/table/update/__init__.py
@@ -212,7 +212,7 @@ class RemoveSchemasUpdate(IcebergBaseModel):
 
 class SetPartitionStatisticsUpdate(IcebergBaseModel):
     action: Literal["set-partition-statistics"] = Field(default="set-partition-statistics")
-    partition_statistics: PartitionStatisticsFile
+    partition_statistics: PartitionStatisticsFile = Field(alias="partition-statistics")
 
 
 class RemovePartitionStatisticsUpdate(IcebergBaseModel):
diff --git a/tests/table/test_init.py b/tests/table/test_init.py
index aef6e3cc5f..30c4a3a45a 100644
--- a/tests/table/test_init.py
+++ b/tests/table/test_init.py
@@ -1605,6 +1605,10 @@ def test_set_partition_statistics_update(table_v2_with_statistics: Table) -> Non
         partition_statistics=partition_statistics_file,
     )
 
+    # Verify that serialization uses 'partition-statistics' alias
+    dumped_with_alias = update.model_dump(by_alias=True)
+    assert "partition-statistics" in dumped_with_alias
+
     new_metadata = update_table_metadata(
         table_v2_with_statistics.metadata,
         (update,),