diff --git a/idna/Cargo.toml b/idna/Cargo.toml
index 2d15e814..91a862f1 100644
--- a/idna/Cargo.toml
+++ b/idna/Cargo.toml
@@ -3,7 +3,7 @@ name = "idna"
 version = "1.0.2"
 authors = ["The rust-url developers"]
 description = "IDNA (Internationalizing Domain Names in Applications) and Punycode."
-categories = ["no_std"]
+keywords = ["no_std", "web", "http"]
 repository = "/~https://github.com/servo/rust-url/"
 license = "MIT OR Apache-2.0"
 autotests = false