diff --git a/Cargo.toml b/Cargo.toml
index 0a231f8..c4eb11c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tree-edit-distance"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["Bruno Dutra <brunocodutra@gmail.com>"]
 edition = "2021"
 description = "Find the lowest cost sequence of edits between two trees"
diff --git a/README.md b/README.md
index 8dc6d8c..b0fc395 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ TreeEditDistance is available on [crates.io], simply add it as a dependency in y
 
 ```
 [dependencies]
-tree-edit-distance = "0.3"
+tree-edit-distance = "0.4"
 ```
 
 The full API documentation is available on [docs.rs][docs.home]