diff --git a/pyproject.toml b/pyproject.toml
index fa82471..f16a2e3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,9 +12,11 @@ readme = "docs/README.md"
 keywords = [ "pyiron",]
 requires-python = ">=3.11, <3.14"
 classifiers = [
-    "Development Status :: 4 - Beta",
+    "Development Status :: 5 - Production/Stable",
+    "Topic :: Software Development",
     "Topic :: Scientific/Engineering",
     "License :: OSI Approved :: BSD License",
+    "Intended Audience :: Developers",
     "Intended Audience :: Science/Research",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3.11",