diff --git a/src/lib.rs b/src/lib.rs
index 17da71ab..c74b4de3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -206,6 +206,7 @@
     unused_qualifications,
     rust_2018_idioms
 )]
+#![allow(unexpected_cfgs)]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
 
 mod cipher;