diff --git a/pyproject.toml b/pyproject.toml
index 250666199..afdab44af 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ build-backend = "flit_core.buildapi"
 [project]
 # Check https://flit.readthedocs.io/en/latest/pyproject_toml.html for all available sections
 name = "ansys-optislang-core"
-version = "0.5.dev0"
+version = "0.6.dev0"
 description = "A Python wrapper for Ansys optiSLang application."
 readme = "README.rst"
 requires-python = ">=3.7,<4"