diff --git a/app/database/statistics.py b/app/database/statistics.py
index 25d4249..3d0b1dd 100644
--- a/app/database/statistics.py
+++ b/app/database/statistics.py
@@ -34,7 +34,7 @@ class UserStatisticsBase(SQLModel):
     count_miss: int = Field(default=0, sa_column=Column(BigInteger))
 
     pp: float = Field(default=0.0, index=True)
-    ranked_score: int = Field(default=0)
+    ranked_score: int = Field(default=0, sa_column=Column(BigInteger))
     hit_accuracy: float = Field(default=0.00)
     total_score: int = Field(default=0, sa_column=Column(BigInteger))
     total_hits: int = Field(default=0, sa_column=Column(BigInteger))
diff --git a/migrations/versions/2025-11-09_a7646e082906_statistics_change_ranked_score_to_bigint.py b/migrations/versions/2025-11-09_a7646e082906_statistics_change_ranked_score_to_bigint.py
new file mode 100644
index 0000000..e75bbce
--- /dev/null
+++ b/migrations/versions/2025-11-09_a7646e082906_statistics_change_ranked_score_to_bigint.py
@@ -0,0 +1,41 @@
+"""statistics: change ranked_score to BigInt
+
+Revision ID: a7646e082906
+Revises: 2d395ba2b4fd
+Create Date: 2025-11-09 04:18:32.701283
+
+"""
+
+from collections.abc import Sequence
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+# revision identifiers, used by Alembic.
+revision: str = "a7646e082906"
+down_revision: str | Sequence[str] | None = "2d395ba2b4fd"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    op.alter_column(
+        "lazer_user_statistics",
+        "ranked_score",
+        existing_type=sa.Integer(),
+        type_=mysql.BIGINT(),
+        existing_nullable=False,
+    )
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    op.alter_column(
+        "lazer_user_statistics",
+        "ranked_score",
+        existing_type=mysql.BIGINT(),
+        type_=sa.Integer(),
+        existing_nullable=False,
+    )