diff --git a/Cargo.toml b/Cargo.toml
index ba90e62..d5059ec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "rustreexo"
 version = "0.6.0"
 description = "A Rust implementation of Utreexo"
 keywords = ["accumulator", "bitcoin", "utreexo"]
-categories = ["algorithms", "cryptography::Cryptocurrencies", "no-std"]
+categories = ["algorithms", "cryptography::cryptocurrencies", "no-std"]
 authors = ["Calvin Kim <calvin@kcalvinalvin.info>", "Davidson Souza <contact@dlsouza.dev>"]
 repository = "https://github.com/mit-dci/rustreexo"
 license = "MIT OR Apache-2.0"