diff --git a/pyproject.toml b/pyproject.toml
index d5c1073..86f87aa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "mangum"
-version = "0.17.0"
+version = "0.18.0a1"
 authors = [
     { name = "Jordan Eremieff", email = "jordan@eremieff.com" },
     { name = "Marcelo Trylesinski", email = "marcelotryle@gmail.com" },