diff --git a/src/DataSchemas/aind_behavior_services/session/__init__.py b/src/DataSchemas/aind_behavior_services/session/__init__.py
index 4489cd77..bc8ef0a2 100644
--- a/src/DataSchemas/aind_behavior_services/session/__init__.py
+++ b/src/DataSchemas/aind_behavior_services/session/__init__.py
@@ -1,6 +1,6 @@
 # Import core types
 from datetime import datetime
-from typing import Literal, Optional
+from typing import Literal, Optional, List
 
 from aind_behavior_services.base import SchemaVersionedModel
 
@@ -13,6 +13,7 @@
 class AindBehaviorSessionModel(SchemaVersionedModel):
     schema_version: Literal[__version__] = __version__
     experiment: str = Field(..., description="Name of the experiment")
+    experimenter: List[str] = Field(default=[], description="Name of the experimenter")
     date: datetime = Field(default_factory=datetime.now, description="Date of the experiment")
     root_path: str = Field(..., description="Root path where data will be logged")
     remote_path: Optional[str] = Field(