diff --git a/serde/src/lib.rs b/serde/src/lib.rs
index f0d04e03..f3e44a9c 100644
--- a/serde/src/lib.rs
+++ b/serde/src/lib.rs
@@ -96,6 +96,7 @@
 #![cfg_attr(feature = "cargo-clippy", allow(doc_markdown))]
 #![cfg_attr(feature = "cargo-clippy", allow(linkedlist))]
 #![cfg_attr(feature = "cargo-clippy", allow(type_complexity))]
+#![cfg_attr(feature = "cargo-clippy", allow(unreadable_literal))]
 #![cfg_attr(feature = "cargo-clippy", allow(zero_prefixed_literal))]
 
 // Blacklisted Rust lints.