diff --git a/robot-server/robot_server/persistence/_migrations/up_to_3.py b/robot-server/robot_server/persistence/_migrations/up_to_3.py
index 73053d10391..b4382545dbf 100644
--- a/robot-server/robot_server/persistence/_migrations/up_to_3.py
+++ b/robot-server/robot_server/persistence/_migrations/up_to_3.py
@@ -23,7 +23,6 @@
 from typing import List
 
 from opentrons.protocol_engine import StateSummary
-import pydantic
 import sqlalchemy
 
 from ..pydantic import pydantic_to_json
@@ -138,9 +137,7 @@ def _migrate_run_table_excluding_commands(
             new_state_summary = (
                 None
                 if old_row.state_summary is None
-                else pydantic_to_json(
-                    pydantic.parse_obj_as(StateSummary, old_state_summary)
-                )
+                else pydantic_to_json(StateSummary.model_validate(old_state_summary))
             )
             dest_transaction.execute(
                 insert_new_run,