diff --git a/requirements.txt b/requirements.txt
index 59b9375..db8c313 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ bcrypt>=4.0,<5.0
 python-jose[cryptography]>=3.3.0
 python-multipart>=0.0.9
 alembic>=1.13.0
-pymysql>=1.1.0
+pymysql>=1.2.3
 # httpx2：starlette 1.7+ 的 TestClient 依赖（Tom Christie 作者、pydantic 组织维护）。
 # 出处：starlette/testclient.py 里 `import httpx2 as httpx`，找不到时会抛
 # RuntimeError: The starlette.testclient module requires the httpx2 package。