diff --git a/models/staging/metaplex/fact_metaplex_sales.sql b/models/staging/metaplex/fact_metaplex_sales.sql
index 210dfc5e..b158a069 100644
--- a/models/staging/metaplex/fact_metaplex_sales.sql
+++ b/models/staging/metaplex/fact_metaplex_sales.sql
@@ -1,7 +1,8 @@
 {{
     config(
         materialized = 'incremental',
-        snowflake_warehouse = 'METAPLEX'
+        snowflake_warehouse = 'METAPLEX',
+        unique_key = 'block_timestamp'
     )
 }}