diff --git a/Cargo.toml b/Cargo.toml
index a5e63e804..e028e5a74 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -155,6 +155,7 @@ pep508_rs = { path = "crates/pep508-rs" }
 [workspace.lints.rust]
 unsafe_code = "warn"
 unreachable_pub = "warn"
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(codspeed)'] }
 
 [workspace.lints.clippy]
 pedantic = { level = "warn", priority = -2 }
diff --git a/crates/uv-extract/src/tar.rs b/crates/uv-extract/src/tar.rs
index a89caf99b..4791a7547 100644
--- a/crates/uv-extract/src/tar.rs
+++ b/crates/uv-extract/src/tar.rs
@@ -3,7 +3,7 @@ use std::path::{Component, Path, PathBuf};
 /// Determine the path at which the given tar entry will be unpacked, when unpacking into `dst`.
 ///
 /// See: <https://github.com/vorot93/tokio-tar/blob/87338a76092330bc6fe60de95d83eae5597332e1/src/entry.rs#L418>
-#[cfg_attr(not(target_os = "unix"), allow(dead_code))]
+#[cfg_attr(not(unix), allow(dead_code))]
 pub(crate) fn unpacked_at(dst: &Path, entry: &Path) -> Option<PathBuf> {
     let mut file_dst = dst.to_path_buf();
     {