diff --git a/libc-test/build.rs b/libc-test/build.rs
index 2da148caa61ba..29636554bd5e3 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -2409,6 +2409,9 @@ fn test_freebsd(target: &str) {
             // FIXME: Removed in FreeBSD 15:
             "LOCAL_CONNWAIT" => true,
 
+            // FIXME: The values has been changed in FreeBSD 15:
+            "CLOCK_BOOTTIME" if Some(15) <= freebsd_ver => true,
+
             _ => false,
         }
     });
diff --git a/src/lib.rs b/src/lib.rs
index 0fbc79d7fa3d0..1fe44ce6eef08 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -12,6 +12,10 @@
     redundant_semicolons,
     unused_macros,
     unused_macro_rules,
+    // FIXME: temporarily allow dead_code to fix CI:
+    // - https://github.com/rust-lang/libc/issues/3740
+    // - https://github.com/rust-lang/rust/pull/126456
+    dead_code,
 )]
 #![cfg_attr(libc_deny_warnings, deny(warnings))]
 // Attributes needed when building as part of the standard library