diff --git a/libs/labelbox/src/labelbox/__init__.py b/libs/labelbox/src/labelbox/__init__.py
index 399cf5f69..1a62bbb5f 100644
--- a/libs/labelbox/src/labelbox/__init__.py
+++ b/libs/labelbox/src/labelbox/__init__.py
@@ -54,6 +54,7 @@
 from labelbox.schema.tool_building.fact_checking_tool import FactCheckingTool
 from labelbox.schema.tool_building.step_reasoning_tool import StepReasoningTool
 from labelbox.schema.tool_building.prompt_issue_tool import PromptIssueTool
+from labelbox.schema.tool_building.relationship_tool import RelationshipTool
 from labelbox.schema.role import Role, ProjectRole
 from labelbox.schema.invite import Invite, InviteLimit
 from labelbox.schema.data_row_metadata import (