diff --git a/Cargo.toml b/Cargo.toml
index e89e0e8..f856271 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,3 +24,13 @@ serde = { version = "1.0", features = ["derive"] }
 [features]
 default = ["std"]
 std = ["serde?/std", "borsh?/std"]
+portable-atomic = [
+  "dep:portable-atomic",
+  "dep:portable-atomic-util",
+]
+
+[target.'cfg(not(target_has_atomic = "ptr"))'.dependencies]
+portable-atomic = { version = "1", default-features = false, optional = true }
+portable-atomic-util = { version = "0.2.4", features = [
+  "alloc",
+], optional = true }
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index bf88f57..bb9435a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,7 +3,7 @@
 
 extern crate alloc;
 
-use alloc::{borrow::Cow, boxed::Box, string::String, sync::Arc};
+use alloc::{borrow::Cow, boxed::Box, string::String};
 use core::{
     borrow::Borrow,
     cmp::{self, Ordering},
@@ -12,6 +12,17 @@ use core::{
     str::FromStr,
 };
 
+#[cfg(all(not(target_has_atomic = "ptr"), feature = "portable-atomic"))]
+use portable_atomic_util::Arc;
+
+#[cfg(target_has_atomic = "ptr")]
+use alloc::sync::Arc;
+
+#[cfg(all(not(target_has_atomic = "ptr"), not(feature = "portable-atomic")))]
+compile_error!(
+    "Targets without support for atomic pointers must enable the `portable-atomic` feature"
+);
+
 /// A `SmolStr` is a string type that has the following properties:
 ///
 /// * `size_of::<SmolStr>() == 24` (therefor `== size_of::<String>()` on 64 bit platforms)