COSCUP
diff --git a/‎poetry.lock
+98-10 b/‎poetry.lock
+98-10
diff --git a/‎pyproject.toml
+3 b/‎pyproject.toml
+3
@@ -44,6 +44,9 @@ mkdocstrings = {extras = ["python"], version = "^0.19.0"}
 certifi = "^2022.5.18"
 black = "^22.3.0"
 
+[tool.poetry.group.dev.dependencies]
+lxml = "^4.9.1"
+
 [build-system]
 requires = ["poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"