diff --git a/.drone.yml b/.drone.yml
index b922e38..c9df02a 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -4,7 +4,7 @@ type: docker
 
 steps:
   - name: epub
-    image: python-slim
+    image: python:slim
     commands:
       - pip install flake8 black
       - flake8 --ignore=501