diff --git a/pyproject.toml b/pyproject.toml
index d3adb06..ba13f60 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "llm-claude-3"
-version = "0.8"
+version = "0.9a0"
 description = "LLM access to Claude 3 by Anthropic"
 readme = "README.md"
 authors = [{name = "Simon Willison"}]