diff --git a/Cargo.toml b/Cargo.toml
index 8acda3d..36d18f4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rlua"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["kyren <catherine@chucklefish.org>"]
 repository = "https://github.com/chucklefish/rlua"
 description = "High level bindings to Lua 5.3"