diff --git a/pyproject.toml b/pyproject.toml
index dc869170..fc60f3db 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ authors = [
     {name = "Jochen Sieg"}
 ]
 description = "Integration of rdkit functionality into sklearn pipelines."
-version = "0.8.6"
+version = "0.9.0"
 readme = "README.md"
 
 [tool.setuptools.dynamic]