diff --git a/Cargo.toml b/Cargo.toml
index 34b21eb..9925d38 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "read_aconity_layers"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 
 [lib]
diff --git a/pyproject.toml b/pyproject.toml
index 4a649ea..5464af1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ dynamic = ["version"]
 
 [tool.poetry]
 name = "read_aconity_layers"
-version = "0.3.0"
+version = "0.4.0"
 description = "A utility for fast reading of layer data from the aconity mini powder bed fusion machine"
 urls = { github = "https://github.com/Cian-H/read_aconity_layers" }
 authors = ["Cian Hughes <chughes000@gmail.com>"]