diff --git a/crates/stdext/src/lib.rs b/crates/stdext/src/lib.rs
index c85378bb73e..121b10ac59f 100644
--- a/crates/stdext/src/lib.rs
+++ b/crates/stdext/src/lib.rs
@@ -3,6 +3,11 @@
 
 //! Arena allocators. Small and fast.
 
+#![cfg_attr(
+    target_arch = "loongarch64",
+    feature(stdarch_loongarch),
+)]
+
 pub mod alloc;
 pub mod arena;
 pub mod collections;