diff --git a/.drone.yml b/.drone.yml
index 04c9e33..e981d48 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -7,6 +7,7 @@ steps:
     commands:
       - eval $(ssh-agent -s)
       - ssh-add - <<< "$SSH_PRIVATE_KEY"
+      - npm install postcss-cli
     environment:
       SSH_PRIVATE_KEY:
         from_secret: SSH_PRIVATE_KEY