diff --git a/pyproject.toml b/pyproject.toml
index 19ab2928..8a5f2005 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "oarepo-model-builder"
-version = "1.0.0.dev3"
+version = "1.0.0.dev4"
 description = "An utility library that generates OARepo required data model files from a JSON specification file"
 authors = ["Miroslav Bauer <bauer@cesnet.cz>", "Miroslav Simek <simeki@vscht.cz>"]
 readme = "README.md"