diff --git a/tests/cxx_string.rs b/tests/cxx_string.rs
index 878be942b..8da0c8b74 100644
--- a/tests/cxx_string.rs
+++ b/tests/cxx_string.rs
@@ -1,4 +1,5 @@
 #![allow(
+    clippy::incompatible_msrv, // https://github.com/rust-lang/rust-clippy/issues/12257
     clippy::items_after_statements,
     clippy::uninlined_format_args,
     clippy::unused_async