diff --git a/Cargo.toml b/Cargo.toml
index 9aca672a..70c13a76 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,7 @@
 name = "semver"
 version = "1.0.12"
 authors = ["David Tolnay <dtolnay@gmail.com>"]
+categories = ["data-structures", "no-std"]
 description = "Parser and evaluator for Cargo's flavor of Semantic Versioning"
 documentation = "https://docs.rs/semver"
 edition = "2018"