diff --git a/pyproject.toml b/pyproject.toml
index e54bad84..be1533bf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,11 +12,10 @@ readme = "README.md"
 authors = [{name = "The OpenFE developers", email = "openfe@omsf.io"}]
 license = {text = "MIT"}
 classifiers = [
-    "Development Status :: 1 - Planning",
+    "Development Status :: 5 - Production/Stable"
     "Intended Audience :: Science/Research",
     "License :: OSI Approved :: MIT License",
     "Operating System :: POSIX",
-    "Operating System :: Microsoft :: Windows",
     "Programming Language :: Python :: 3",
     "Topic :: Scientific/Engineering :: Bio-Informatics",
     "Topic :: Scientific/Engineering :: Chemistry",