diff --git a/pyproject.toml b/pyproject.toml
index 3706253df..9a77001c8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,9 +17,12 @@ classifiers = [
     "Intended Audience :: Information Technology",
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
-    "Programming Language :: Python",
-    "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: File Formats :: JSON",
     "Topic :: Office/Business :: Financial :: Accounting",