diff --git a/pyproject.toml b/pyproject.toml
index c91549d..120cc93 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,9 +5,7 @@ description="A simple, but opinionated CSV quality checking and fixing pipeline
 authors = [
     { name = "Alan Orth", email = "alan.orth@gmail.com" }
 ]
-license="GPL-3.0-only"
-repository = "https://github.com/ilri/csv-metadata-quality"
-homepage = "https://github.com/ilri/csv-metadata-quality"
+license= { file = "LICENSE.txt" }
 dependencies = [
     "pandas[feather,performance]>=2.2.1",
     "python-stdnum>=1.19",
@@ -22,6 +20,21 @@ dependencies = [
 readme = "README.md"
 requires-python = ">= 3.9"
 
+classifiers = [
+  "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
+  "Natural Language :: English",
+  "Operating System :: OS Independent",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: Implementation :: CPython",
+]
+
+[project.urls]
+repository = "https://github.com/ilri/csv-metadata-quality"
+homepage = "https://github.com/ilri/csv-metadata-quality"
+
 [project.scripts]
 csv-metadata-quality = 'csv_metadata_quality.__main__:main'