diff --git a/pyproject.toml b/pyproject.toml
index 38cceeac..095af094 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,8 @@ classifiers = [
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: PyPy",
+  "Topic :: File Formats :: JSON",
+  "Topic :: File Formats :: JSON Schema",
 ]
 dynamic = ["version", "readme"]