diff --git a/pyproject.toml b/pyproject.toml
index 1fd24f6..d9eb5b6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "polykin"
-version = "0.3.1"
+version = "0.4.1"
 description = "A polymerization kinetics library."
 authors = ["HugoMVale <57530119+HugoMVale@users.noreply.github.com>"]
 license = "MIT"