diff --git a/src/lib.rs b/src/lib.rs
index 8c4f6b1d34465fd0176e5b266b8b0ede0f293c8f..6c4cbf7ae8dbfb6e903b4d7d0d4c0104a4874fde 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -39,6 +39,8 @@ cfg_if! {
         #[allow(unused_imports)]
         use core::iter;
         #[allow(unused_imports)]
+        use core::ops;
+        #[allow(unused_imports)]
         use core::option;
     }
 }