diff --git a/pyproject.toml b/pyproject.toml
index 9bc810d..5f73950 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -140,7 +140,7 @@ filterwarnings = [
 ]
 
 [tool.bumpversion]
-current_version = "0.8.0"
+current_version = "0.9.0"
 
 search = "{current_version}"
 replace = "{new_version}"
diff --git a/tipg/__init__.py b/tipg/__init__.py
index 221968d..4000ed9 100644
--- a/tipg/__init__.py
+++ b/tipg/__init__.py
@@ -1,3 +1,3 @@
 """tipg."""
 
-__version__ = "0.8.0"
+__version__ = "0.9.0"