diff --git a/alembic/versions/031_add_user_display_name.py b/alembic/versions/031_add_user_display_name.py
deleted file mode 100644
index b8a808e87..000000000
--- a/alembic/versions/031_add_user_display_name.py
+++ /dev/null
@@ -1,28 +0,0 @@
-"""Add display_name column to users table
-
-Revision ID: 031
-Revises: 030
-Create Date: 2026-07-07
-
-新增用户 display_name 字段，支持用户昵称展示。
-"""
-
-import sqlalchemy as sa
-
-from alembic import op
-
-revision = "031"
-down_revision = "030"
-branch_labels = None
-depends_on = None
-
-
-def upgrade() -> None:
-    op.add_column(
-        "users",
-        sa.Column("display_name", sa.String(255), nullable=False, server_default=""),
-    )
-
-
-def downgrade() -> None:
-    op.drop_column("users", "display_name")