diff --git a/.drone.yml b/.drone.yml
index e6bf60e..5082962 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -8,6 +8,6 @@ steps:
   image: rust
   commands:
   - rustup component add clippy
-  - cargo clippy
+  - cargo clippy -- -D warnings
   - cargo test