diff --git a/clippy_lints/src/implicit_hasher.rs b/clippy_lints/src/implicit_hasher.rs
index 03fe0d16d48..9a040ca572a 100644
--- a/clippy_lints/src/implicit_hasher.rs
+++ b/clippy_lints/src/implicit_hasher.rs
@@ -1,4 +1,4 @@
-#![allow(rustc::default_hash_types)]
+#![cfg_attr(bootstrap, allow(rustc::default_hash_types))]
 
 use std::borrow::Cow;
 use std::collections::BTreeMap;