diff --git a/.drone.yml b/.drone.yml
index 988cddff2..39dc9b754 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -2,4 +2,5 @@ pipeline:
   build:
     image: python:3.7.0-alpine3.8
     commands:
+      - pip install tox
       - tox