diff --git a/alembic/versions/0021_csv_format_template.py b/alembic/versions/0021_csv_format_template.py
index 6982277..bc6ca0a 100644
--- a/alembic/versions/0021_csv_format_template.py
+++ b/alembic/versions/0021_csv_format_template.py
@@ -24,11 +24,11 @@ def upgrade() -> None:
         sa.Column("headers", sa.JSON(), nullable=False),
         sa.Column("sample_row", sa.JSON(), nullable=False),
         sa.Column("mapping", sa.JSON(), nullable=False),
-        sa.Column("preamble_rows", sa.Integer(), nullable=False, server_default="0"),
+        sa.Column("preamble_rows", sa.Integer(), nullable=False, server_default=sa.text("0")),
         sa.Column("delimiter", sa.String(length=1), nullable=False, server_default=","),
         sa.Column("broker_label", sa.String(length=128), nullable=True),
         sa.Column("first_seen_at", sa.DateTime(timezone=True), nullable=False),
-        sa.Column("use_count", sa.Integer(), nullable=False, server_default="1"),
+        sa.Column("use_count", sa.Integer(), nullable=False, server_default=sa.text("1")),
         sa.Column("last_used_at", sa.DateTime(timezone=True), nullable=False),
         sa.Column("llm_model", sa.String(length=64), nullable=True),
         sa.Column("llm_cost_usd", sa.Float(), nullable=True),