diff --git a/.drone.yml b/.drone.yml
index f0ca32b..d5970e9 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -6,12 +6,14 @@ steps:
   - name: lint
     image: python:3.11.1
     commands:
+      - pip install poetry
       - poetry install
       - poetry run flake8
       - poetry run mypy
-  - name: books
+  - name: epub
     image: python:3.11.1
     commands:
+      - pip install poetry
       - poetry install --without dev
       - poetry run python books.py
   - name: pdf