diff --git a/pubky/Cargo.toml b/pubky/Cargo.toml
index 877aa86..5e7fac4 100644
--- a/pubky/Cargo.toml
+++ b/pubky/Cargo.toml
@@ -6,6 +6,7 @@ description = "Pubky core client"
 license = "MIT"
 repository = "https://github.com/pubky/pubky"
 keywords = ["web", "dht", "dns", "decentralized", "identity"]
+categories = ["network-programming", "cryptography", "web-programming", "authentication"]
 
 [lib]
 crate-type = ["cdylib", "rlib"]