diff --git a/Cargo.toml b/Cargo.toml
index 30ca218..1822bcc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "c3dio"
 version = "0.2.0"
 authors = ["Claire V. Hammond <claire@biomech.dev>"]
 edition = "2021"
-categories = ["encoding", "filesystem", "parser-implementation", "motion-capture", "biomechanics"]
+categories = ["science", "simulation", "parser-implementations", "game-development", "science::robotics"]
 description = "A library for reading and writing C3D files."
 license = "MIT OR Apache-2.0"
 homepage = "https://biomech.dev/c3dio"