diff --git a/implementations/python/setup.py b/implementations/python/setup.py
index 308008b..71e64cb 100644
--- a/implementations/python/setup.py
+++ b/implementations/python/setup.py
@@ -2,12 +2,12 @@ from setuptools import setup
 
 setup(
     name="preserves",
-    version="0.18.1",
+    version="0.990.0",
     author="Tony Garnock-Jones",
     author_email="tonyg@leastfixedpoint.com",
     license="Apache Software License",
     classifiers=[
-        "Development Status :: 3 - Alpha",
+        "Development Status :: 4 - Beta",
         "Intended Audience :: Developers",
         "Topic :: Software Development :: Libraries :: Python Modules",
         "License :: OSI Approved :: Apache Software License",
@@ -15,7 +15,7 @@ setup(
     ],
     packages=["preserves"],
     url="https://preserves.dev/",
-    description="Experimental data serialization format",
+    description="Data serialization format",
     long_description=open("README.md").read(),
     long_description_content_type="text/markdown",
     install_requires=[],