diff --git a/core/dbt/artifacts/schemas/run/v5/run.py b/core/dbt/artifacts/schemas/run/v5/run.py
index d4adf100388..2724554346e 100644
--- a/core/dbt/artifacts/schemas/run/v5/run.py
+++ b/core/dbt/artifacts/schemas/run/v5/run.py
@@ -2,7 +2,13 @@
 import threading
 from dataclasses import dataclass, field
 from datetime import datetime
-from typing import TYPE_CHECKING, Any, Dict, Iterable, Optional, Sequence, Tuple
+from typing import Any, Dict, Iterable, Optional, Sequence, Tuple
+
+# https://github.com/dbt-labs/dbt-core/issues/10098
+# Needed for Mashumaro serialization of RunResult below
+# TODO: investigate alternative approaches to restore conditional import
+# if TYPE_CHECKING:
+import agate
 
 from dbt.artifacts.resources import CompiledResource
 from dbt.artifacts.schemas.base import (
@@ -22,9 +28,6 @@
 from dbt_common.clients.system import write_json
 from dbt_common.constants import SECRET_ENV_PREFIX
 
-if TYPE_CHECKING:
-    import agate
-
 
 @dataclass
 class RunResult(NodeResult):