diff --git a/Cargo.toml b/Cargo.toml
index 328f684..b18f00b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "grid"
-version = "0.3.1-alpha.0"
+version = "0.4.0"
 authors = ["Armin Becher <armin.becher@gmai.com>"]
 edition = "2018"
 description = "Dynamic generic 2D data structure."