diff --git a/pyproject.toml b/pyproject.toml
index 86ab3b6..a5bb6c4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,6 +14,14 @@ readme = "README.md"
 license = "BSD-3-Clause"
 repository = "https://github.com/eriol/freakble"
 packages = [{include = "freakble", from = "src"}]
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "License :: OSI Approved :: BSD License",
+    "Operating System :: Microsoft :: Windows :: Windows 10",
+    "Operating System :: POSIX :: Linux",
+    "Operating System :: MacOS :: MacOS X",
+    "Topic :: Communications",
+]
 
 [tool.poetry.dependencies]
 python = "^3.8"