diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 51a5842..107dde3 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -13,6 +13,7 @@ dependencies = [
     "fastapi>=0.110,<1",
     "uvicorn[standard]>=0.27,<1",
     "python-multipart>=0.0.9,<1",
+    "sqlalchemy>=2.0,<3",
 ]
 
 [project.optional-dependencies]