diff --git a/.drone.yml b/.drone.yml
index 96d0a51..1272745 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -7,7 +7,7 @@ steps:
 - name: test
   image: python:latest
   commands:
-  - pip install -q --upgrade pre-commit poetry pytest pylint pydantic rich markdownify prettytable feedgen feedparser md2gemini
+  - pip install -q --upgrade pre-commit poetry pytest pylint pydantic rich markdownify prettytable feedgen feedparser md2gemini readability-lxml
   - pre-commit run --all-files
 #  - flake8 --ignore=E501,W503,E265
 #  - mypy --ignore-missing-imports ./tenkan/