diff --git a/mev_inspect/models/liquidations.py b/mev_inspect/models/liquidations.py
index 8c58c04..1c020a9 100644
--- a/mev_inspect/models/liquidations.py
+++ b/mev_inspect/models/liquidations.py
@@ -14,5 +14,5 @@ class LiquidationModel(Base):
     received_amount = Column(Numeric, nullable=False)
     protocol = Column(String, nullable=True)
     transaction_hash = Column(String, primary_key=True)
-    trace_address = Column(ARRAY(Integer), nullable=False)
+    trace_address = Column(ARRAY(Integer), primary_key=True)
     block_number = Column(Numeric, nullable=False)