diff --git a/src/backend/base/langflow/inputs/input_mixin.py b/src/backend/base/langflow/inputs/input_mixin.py
index 97310e537..51586526c 100644
--- a/src/backend/base/langflow/inputs/input_mixin.py
+++ b/src/backend/base/langflow/inputs/input_mixin.py
@@ -16,6 +16,7 @@ class FieldTypes(str, Enum):
     NESTED_DICT = "NestedDict"
     FILE = "file"
     PROMPT = "prompt"
+    OTHER = "other"
 
 
 SerializableFieldTypes = Annotated[FieldTypes, PlainSerializer(lambda v: v.value, return_type=str)]
diff --git a/src/backend/base/langflow/inputs/inputs.py b/src/backend/base/langflow/inputs/inputs.py
index 79a5e72ac..2adfdfaf5 100644
--- a/src/backend/base/langflow/inputs/inputs.py
+++ b/src/backend/base/langflow/inputs/inputs.py
@@ -20,7 +20,7 @@ from .input_mixin import (
 
 class HandleInput(BaseInputMixin, ListableInputMixin):
     input_types: list[str] = Field(default_factory=list)
-    field_type: Optional[str] = ""
+    field_type: Optional[SerializableFieldTypes] = FieldTypes.OTHER
 
     @model_validator(mode="after")
     def validate_model_type(self):