Index: cc-traits/src/impls/serde_json.rs
===================================================================
--- cc-traits.orig/src/impls/serde_json.rs
+++ cc-traits/src/impls/serde_json.rs
@@ -3,7 +3,10 @@ use crate::{
 	Len, MapInsert, MapIter, MapIterMut, Remove, SimpleCollectionMut, SimpleCollectionRef,
 	SimpleKeyedRef,
 };
-use std::{borrow::Borrow, cmp::Ord, hash::Hash};
+use core::{borrow::Borrow, cmp::Ord, hash::Hash};
+
+#[cfg(not(feature = "std"))]
+use alloc::string::String;
 
 impl Collection for serde_json::Map<String, serde_json::Value> {
 	type Item = serde_json::Value;
Index: cc-traits/Cargo.toml
===================================================================
--- cc-traits.orig/Cargo.toml
+++ cc-traits/Cargo.toml
@@ -54,3 +54,7 @@ default = [
     "std",
 ]
 std = []
+serde_json = [
+    "dep:serde_json",
+    "alloc"
+]