diff --git a/.drone.yml b/.drone.yml
index 77cb436..ca88ad3 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -1,6 +1,8 @@
     pipeline:
       prebuild:
         image: golang:1.9
+        environment:
+          - FOO: $$FOO
         commands:
           - IMAGE=dr.dnix.de/$DRONE_REPO_NAME
           - REV=$(git rev-list HEAD --count)