diff --git a/Cargo.toml b/Cargo.toml
index ac9ed41..a64d98e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["takubokudori <takubokudori@gmail.com>"]
 license = "MIT OR Apache-2.0"
 homepage = "https://github.com/takubokudori/windy"
 repository = "https://github.com/takubokudori/windy"
-keywords = ["Windows", "ANSI", "Unicode", "Multi-byte"]
+keywords = ["windows", "ansi", "unicode", "multibyte"]
 description = "A Windows strings library that supports AString (ANSI string) and WString (Unicode string)"
 readme = "README.md"
 edition = "2018"