diff --git a/alembic/versions/0037_user_tenant_model.py b/alembic/versions/0037_user_tenant_model.py
index 88e8eb3..6ba43f1 100644
--- a/alembic/versions/0037_user_tenant_model.py
+++ b/alembic/versions/0037_user_tenant_model.py
@@ -57,9 +57,9 @@ def upgrade() -> None:
         # Check if there's a unique index on email already
         email_index_result = conn.execute(
             sa.text(
-                "SELECT 1 FROM pg_indexes "
-                "WHERE tablename = 'users' AND indexname = 'ix_users_email' "
-                'AND "unique" = true'
+                "SELECT 1 FROM pg_index i "
+                "JOIN pg_class c ON i.indexrelid = c.oid "
+                "WHERE c.relname = 'ix_users_email' AND i.indisunique = true"
             )
         ).fetchone()
         if email_index_result is None: