diff --git a/Cargo.toml b/Cargo.toml
index 2523837..c3414a0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "vec-arena"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["Stjepan Glavina <stjepang@gmail.com>"]
 description = "A simple object arena"
 repository = "https://github.com/stjepang/vec-arena"