diff --git a/pyproject.toml b/pyproject.toml
index cd8e776..e7b3786 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "py-wave-runup"
-version = "0.1.8"
+version = "0.1.9"
 description = "Empirical wave runup models implemented in Python"
 authors = ["Chris Leaman"]
 license = "GPL-3.0+"