diff --git a/src/lib.rs b/src/lib.rs
index 7891da193a..7135d6e60c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,7 +1,7 @@
 #![doc(html_root_url = "https://docs.rs/hyper/0.12.7")]
 #![deny(missing_docs)]
-#![deny(warnings)]
 #![deny(missing_debug_implementations)]
+#![cfg_attr(test, deny(warnings))]
 #![cfg_attr(all(test, feature = "nightly"), feature(test))]
 
 //! # hyper