diff --git a/pyproject.toml b/pyproject.toml
index bbda5b4..4a9aa51 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "phenotype2phenopacket"
-version = "0.3.0"
+version = "0.4.0"
 description = ""
 authors = ["Yasemin Bridges <y.bridges@qmul.ac.uk>"]
 readme = "README.md"