diff --git a/src/build_metadata/mod.rs b/src/build_metadata/mod.rs
index f50018d2..86a8a800 100644
--- a/src/build_metadata/mod.rs
+++ b/src/build_metadata/mod.rs
@@ -16,6 +16,7 @@ pub static VERSION_EXTRA: Option<&str> =
 		option_env!("CONDUIT_VERSION_EXTRA")
 	};
 
+#[must_use]
 pub fn version_tag() -> Option<&'static str> {
 	VERSION_EXTRA
 		.filter(|s| !s.is_empty())