diff --git a/nonebot_bison/config/db_model.py b/nonebot_bison/config/db_model.py
index 2c74721..d7c84f9 100644
--- a/nonebot_bison/config/db_model.py
+++ b/nonebot_bison/config/db_model.py
@@ -76,6 +76,7 @@ class Cookie(Model):
     content: Mapped[str] = mapped_column(String(1024))
     last_usage: Mapped[datetime.datetime] = mapped_column(DateTime, default=datetime.datetime(1970, 1, 1))
     status: Mapped[str] = mapped_column(String(20), default="")
+    cd: Mapped[int] = mapped_column(default=0)
     tags: Mapped[dict[str, Any]] = mapped_column(JSON().with_variant(JSONB, "postgresql"), default={})
 
     targets: Mapped[list["CookieTarget"]] = relationship(back_populates="cookie")
diff --git a/nonebot_bison/config/migrations/590dc2911ea7_add_cookie.py b/nonebot_bison/config/migrations/590dc2911ea7_add_cookie.py
deleted file mode 100644
index c8fbd1d..0000000
--- a/nonebot_bison/config/migrations/590dc2911ea7_add_cookie.py
+++ /dev/null
@@ -1,59 +0,0 @@
-"""empty message
-
-Revision ID: 590dc2911ea7
-Revises: f9baef347cc8
-Create Date: 2024-08-31 23:06:02.123932
-
-"""
-
-import sqlalchemy as sa
-from alembic import op
-from sqlalchemy import Text
-from sqlalchemy.dialects import postgresql
-
-# revision identifiers, used by Alembic.
-revision = "590dc2911ea7"
-down_revision = "f9baef347cc8"
-branch_labels = None
-depends_on = None
-
-
-def upgrade() -> None:
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.create_table(
-        "nonebot_bison_cookie",
-        sa.Column("id", sa.Integer(), nullable=False),
-        sa.Column("platform_name", sa.String(length=20), nullable=False),
-        sa.Column("content", sa.String(length=1024), nullable=False),
-        sa.Column("last_usage", sa.DateTime(), nullable=False),
-        sa.Column("status", sa.String(length=20), nullable=False),
-        sa.Column("tags", sa.JSON().with_variant(postgresql.JSONB(astext_type=Text()), "postgresql"), nullable=False),
-        sa.PrimaryKeyConstraint("id", name=op.f("pk_nonebot_bison_cookie")),
-    )
-    op.create_table(
-        "nonebot_bison_cookietarget",
-        sa.Column("id", sa.Integer(), nullable=False),
-        sa.Column("target_id", sa.Integer(), nullable=False),
-        sa.Column("cookie_id", sa.Integer(), nullable=False),
-        sa.ForeignKeyConstraint(
-            ["cookie_id"],
-            ["nonebot_bison_cookie.id"],
-            name=op.f("fk_nonebot_bison_cookietarget_cookie_id_nonebot_bison_cookie"),
-            ondelete="CASCADE",
-        ),
-        sa.ForeignKeyConstraint(
-            ["target_id"],
-            ["nonebot_bison_target.id"],
-            name=op.f("fk_nonebot_bison_cookietarget_target_id_nonebot_bison_target"),
-            ondelete="CASCADE",
-        ),
-        sa.PrimaryKeyConstraint("id", name=op.f("pk_nonebot_bison_cookietarget")),
-    )
-    # ### end Alembic commands ###
-
-
-def downgrade() -> None:
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_table("nonebot_bison_cookietarget")
-    op.drop_table("nonebot_bison_cookie")
-    # ### end Alembic commands ###