diff --git a/engineapi/alembic/versions/cc80e886e153_added_leaderboard_versions_table_and_.py b/engineapi/alembic/versions/cc80e886e153_added_leaderboard_versions_table_and_.py
index bdc773f6f..515d638c7 100644
--- a/engineapi/alembic/versions/cc80e886e153_added_leaderboard_versions_table_and_.py
+++ b/engineapi/alembic/versions/cc80e886e153_added_leaderboard_versions_table_and_.py
@@ -60,6 +60,14 @@ def upgrade():
         "leaderboard_scores",
         sa.Column("leaderboard_version_number", sa.DECIMAL(), nullable=True),
     )
+    op.drop_constraint(
+        "uq_leaderboard_scores_leaderboard_id", "leaderboard_scores", type_="unique"
+    )
+    op.create_unique_constraint(
+        op.f("uq_leaderboard_scores_leaderboard_id"),
+        "leaderboard_scores",
+        ["leaderboard_id", "address", "leaderboard_version_number"],
+    )
     op.drop_constraint(
         "fk_leaderboard_scores_leaderboard_id_leaderboards",
         "leaderboard_scores",
@@ -111,6 +119,16 @@ def downgrade():
         ["id"],
         ondelete="CASCADE",
     )
+    op.drop_constraint(
+        op.f("uq_leaderboard_scores_leaderboard_id"),
+        "leaderboard_scores",
+        type_="unique",
+    )
+    op.create_unique_constraint(
+        "uq_leaderboard_scores_leaderboard_id",
+        "leaderboard_scores",
+        ["leaderboard_id", "address"],
+    )
     op.drop_column("leaderboard_scores", "leaderboard_version_number")
     op.drop_index(
         op.f("ix_leaderboard_versions_created_at"), table_name="leaderboard_versions"
diff --git a/engineapi/engineapi/models.py b/engineapi/engineapi/models.py
index c60ee0de1..c516cde29 100644
--- a/engineapi/engineapi/models.py
+++ b/engineapi/engineapi/models.py
@@ -387,7 +387,7 @@ class LeaderboardVersion(Base):  # type: ignore
 class LeaderboardScores(Base):  # type: ignore
     __tablename__ = "leaderboard_scores"
     __table_args__ = (
-        UniqueConstraint("leaderboard_id", "address"),
+        UniqueConstraint("leaderboard_id", "address", "leaderboard_version_number"),
         ForeignKeyConstraint(
             ["leaderboard_id", "leaderboard_version_number"],
             [