diff --git a/pyproject.toml b/pyproject.toml
index c11f6ec..093138d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,15 +16,19 @@ authors = [
 requires-python = ">=3.7"
 dependencies = ["numpy>=1.12", "scikit-learn>=1.0", "scipy>=0.18.0"]
 classifiers = [
+  "Development Status :: 3 - Alpha",
+  "Intended Audience :: Science/Research",
+  "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
+  "Operating System :: POSIX :: Linux",
+  "Programming Language :: C++",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.7",
-  "Programming Language :: Python :: 3.8",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
-  "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
-  "Operating System :: POSIX :: Linux",
+  "Programming Language :: Python :: 3.7",
+  "Programming Language :: Python :: 3.8",
+  "Programming Language :: Python :: 3.9",
+  "Topic :: Scientific/Engineering",
 ]
 
 [project.urls]