diff --git a/Cargo.toml b/Cargo.toml
index 0866b3e..8c10f8e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,6 +20,7 @@ libm = { version = "0.2.7", optional = true }
 wasi = { version = "0.11.0", default-features = false }
 
 [features]
+std = ["alloc"]
 alloc = []
 derive = ["asr-derive"]
 flags = ["bitflags"]
diff --git a/src/lib.rs b/src/lib.rs
index d22d79b..8f1d560 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,4 @@
-#![no_std]
+#![cfg_attr(not(feature = "std"), no_std)]
 #![warn(
     clippy::complexity,
     clippy::correctness,