diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index fbda138d5..09fb518e9 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -38,8 +38,12 @@ markers = [
     "no_auto_user: disable the conftest autouse contextvar fixture for this test",
 ]
 
+[tool.uv]
+index-url = "https://pypi.org/simple"
+
 [tool.uv.workspace]
 members = ["packages/harness"]
 
 [tool.uv.sources]
 deerflow-harness = { workspace = true }
+
diff --git a/backend/uv.toml b/backend/uv.toml
deleted file mode 100644
index 7884c96f1..000000000
--- a/backend/uv.toml
+++ /dev/null
@@ -1 +0,0 @@
-index-url = "https://pypi.org/simple"