diff --git a/src/aind_data_schema_models/organizations.py b/src/aind_data_schema_models/organizations.py
index 8b27ad1..1678edc 100644
--- a/src/aind_data_schema_models/organizations.py
+++ b/src/aind_data_schema_models/organizations.py
@@ -74,6 +74,7 @@ class OrganizationModel(BaseModel):
         Organization.NIKON,
         Organization.OLYMPUS,
         Organization.SCHNEIDER_KREUZNACH,
+        Organization.TAMRON,
         Organization.THORLABS,
         Organization.CARL_ZEISS,
         Organization.OTHER,