diff --git a/fastapi_users_db_sqlalchemy/__init__.py b/fastapi_users_db_sqlalchemy/__init__.py
index 467a2bf..0f42dbf 100644
--- a/fastapi_users_db_sqlalchemy/__init__.py
+++ b/fastapi_users_db_sqlalchemy/__init__.py
@@ -5,7 +5,7 @@
 
 from fastapi_users.db.base import BaseUserDatabase
 from fastapi_users.models import ID, OAP, UP
-from sqlalchemy import Boolean, ForeignKey, Integer, String, func, select
+from sqlalchemy import BigInteger, Boolean, ForeignKey, String, func, select
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.orm import Mapped, declared_attr, mapped_column
 from sqlalchemy.sql import Select
@@ -70,7 +70,7 @@ class SQLAlchemyBaseOAuthAccountTable(Generic[ID]):
             String(length=100), index=True, nullable=False
         )
         access_token: Mapped[str] = mapped_column(String(length=1024), nullable=False)
-        expires_at: Mapped[Optional[int]] = mapped_column(Integer, nullable=True)
+        expires_at: Mapped[Optional[int]] = mapped_column(BigInteger, nullable=True)
         refresh_token: Mapped[Optional[str]] = mapped_column(
             String(length=1024), nullable=True
         )
diff --git a/tests/test_users.py b/tests/test_users.py
index 4a83e39..258eafc 100644
--- a/tests/test_users.py
+++ b/tests/test_users.py
@@ -219,3 +219,9 @@ async def test_queries_oauth(
         "foo", "bar"
     )
     assert unknown_oauth_user is None
+
+
+def test_oauth_account_expires_at_is_big_integer():
+    from sqlalchemy import BigInteger
+
+    assert isinstance(OAuthAccount.__table__.c.expires_at.type, BigInteger)