diff --git a/pyproject.toml b/pyproject.toml
index e937ee0..49afaee 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,6 +11,7 @@ dependencies = [
     "langchain>=0.3.27",
     "langchain-openai>=0.3.35",
     "numpy>=2.3.3",
+    "pymysql>=1.1.2",
     "python-multipart>=0.0.20",
     "qiniu>=7.17.0",
     "requests>=2.32.5",