diff --git a/serde/Cargo.toml b/serde/Cargo.toml
index 2f06c19a..80694fbd 100644
--- a/serde/Cargo.toml
+++ b/serde/Cargo.toml
@@ -8,7 +8,7 @@ homepage = "https://serde.rs"
 repository = "https://github.com/serde-rs/serde"
 documentation = "https://docs.serde.rs/serde/"
 readme = "../README.md"
-keywords = ["serde", "serialization"]
+keywords = ["serde", "serialization", "no_std"]
 categories = ["encoding"]
 include = ["Cargo.toml", "src/**/*.rs"]
 
diff --git a/serde_derive/Cargo.toml b/serde_derive/Cargo.toml
index 32bbd15c..223fd4da 100644
--- a/serde_derive/Cargo.toml
+++ b/serde_derive/Cargo.toml
@@ -7,7 +7,7 @@ description = "Macros 1.1 implementation of #[derive(Serialize, Deserialize)]"
 homepage = "https://serde.rs"
 repository = "https://github.com/serde-rs/serde"
 documentation = "https://serde.rs/codegen.html"
-keywords = ["serde", "serialization"]
+keywords = ["serde", "serialization", "no_std"]
 include = ["Cargo.toml", "src/**/*.rs"]
 
 [features]