diff --git a/src/backends/rdrand.rs b/src/backends/rdrand.rs
index ece9a434..439ead95 100644
--- a/src/backends/rdrand.rs
+++ b/src/backends/rdrand.rs
@@ -77,10 +77,14 @@ fn is_rdrand_good() -> bool {
     {
         // SAFETY: All Rust x86 targets are new enough to have CPUID, and we
         // check that leaf 1 is supported before using it.
+        //
+        // TODO(MSRV 1.94): remove allow(unused_unsafe) and the unsafe blocks for `__cpuid`.
+        #[allow(unused_unsafe)]
         let cpuid0 = unsafe { arch::__cpuid(0) };
         if cpuid0.eax < 1 {
             return false;
         }
+        #[allow(unused_unsafe)]
         let cpuid1 = unsafe { arch::__cpuid(1) };
 
         let vendor_id = [