diff --git a/serde_derive/Cargo.toml b/serde_derive/Cargo.toml
index 5a73485f..d02a2a90 100644
--- a/serde_derive/Cargo.toml
+++ b/serde_derive/Cargo.toml
@@ -2,7 +2,7 @@
 name = "serde_derive"
 version = "1.0.166" # remember to update html_root_url
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
-categories = ["no-std"]
+categories = ["no-std", "no-std::no-alloc"]
 description = "Macros 1.1 implementation of #[derive(Serialize, Deserialize)]"
 documentation = "https://serde.rs/derive.html"
 homepage = "https://serde.rs"