diff --git a/pyproject.toml b/pyproject.toml
index 0f7b629384f342be838390d547039697f3928b4d..e9d8d609d95df06a7f90eb2d49ec5078631035d3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,6 +7,7 @@ authors = ["Christoph Knote <christoph.knote@med.uni-augsburg.de>"]
 readme = "README.md"
 homepage = "https://mbees.med.uni-augsburg.de/"
 repository = "https://mbees.med.uni-augsburg.de/gitlab/mbees/boxmox_pypackage"
+keywords = [ "atmosphere", "chemistry", "box model", "boxmox" ]
 classifiers = [
     "Programming Language :: Python :: 3"
     "Development Status :: 5 - Production/Stable"