diff --git a/.drone.yml b/.drone.yml
index 31ba9985..80ce941d 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -3,6 +3,6 @@ pipeline:
     image: ubuntu
     commands:
       - apt-get update
-      - apt-get install -y build-essential
+      - apt-get install -y build-essential file
       - make -C projects/rpi_domo/
       - make -C projects/rpi_domo/ buildroot.check-package