diff --git a/tests/cache.rs b/tests/cache.rs
index b3f630f..bef846c 100644
--- a/tests/cache.rs
+++ b/tests/cache.rs
@@ -1,3 +1,4 @@
+#![allow(missing_docs)]
 #![cfg(target_pointer_width = "64")]
 
 //! Note we only run these tests if _built_ for 64-bit, as the only test targets