diff --git a/Cargo.toml b/Cargo.toml
index aea5d3a..ab80e4a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "num2words"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["Asperatus <rust@ballasi.com>"]
 edition = "2018"
 description = "Convert numbers like 42 to forty-two"