diff --git a/Cargo.toml b/Cargo.toml
index 9205d8e3dcb..e68496c32e4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,3 +20,4 @@ lto = true
 codegen-units = 1
 panic = "abort"
 opt-level = 3
+
diff --git a/packages/yew-macro/Cargo.toml b/packages/yew-macro/Cargo.toml
index 9d497486b92..af83d0c3e54 100644
--- a/packages/yew-macro/Cargo.toml
+++ b/packages/yew-macro/Cargo.toml
@@ -28,3 +28,7 @@ prettyplease = "0.2"
 rustversion = "1"
 trybuild = "1"
 yew = { path = "../yew" }
+
+[lints.rust]
+unexpected_cfgs = { level = "allow", check-cfg = ['cfg(nightly_yew)'] }
+
diff --git a/packages/yew/Cargo.toml b/packages/yew/Cargo.toml
index db069d9efa8..07780f2d9dd 100644
--- a/packages/yew/Cargo.toml
+++ b/packages/yew/Cargo.toml
@@ -100,3 +100,7 @@ default = []
 [package.metadata.docs.rs]
 all-features = true
 rustdoc-args = ["--cfg", "documenting"]
+
+[lints.rust]
+unexpected_cfgs = { level = "allow", check-cfg = ['cfg(nightly_yew)'] }
+
diff --git a/packages/yew/src/dom_bundle/blist.rs b/packages/yew/src/dom_bundle/blist.rs
index ab763fa11c2..9c2ad6b5f30 100644
--- a/packages/yew/src/dom_bundle/blist.rs
+++ b/packages/yew/src/dom_bundle/blist.rs
@@ -248,6 +248,7 @@ impl BList {
         let rights_to = rev_bundles.len() - matching_len_start;
         let mut spliced_middle =
             rev_bundles.splice(matching_len_end..rights_to, std::iter::empty());
+        #[allow(clippy::mutable_key_type)]
         let mut spare_bundles: HashSet<KeyedEntry> =
             HashSet::with_capacity((matching_len_end..rights_to).len());
         for (idx, r) in (&mut spliced_middle).enumerate() {