diff --git a/setup.py b/setup.py
index a1edaac..b774a54 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@ def main(argv):
     data = {
         "name": "PySDL3",
         "packages": ["sdl3", "sdl3.bin"],
-        "version": "0.4.0a0",
+        "version": "0.4.0a1",
         "description": "A pure Python wrapper for SDL3.",
         "long_description": open("README.md", "r", encoding = "utf-8").read(),
         "long_description_content_type": "text/markdown",