diff --git a/doc/json_mime_render_plugin/pyproject.toml b/doc/json_mime_render_plugin/pyproject.toml
index 788035bed..4900aeca5 100644
--- a/doc/json_mime_render_plugin/pyproject.toml
+++ b/doc/json_mime_render_plugin/pyproject.toml
@@ -3,10 +3,10 @@ name = "myst-nb-json-renderer"
 version = "1"
 classifiers = [
   "Programming Language :: Python :: 3 :: Only",
-  "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",
+  "Programming Language :: Python :: 3.13",
 ]
 entry-points."myst_nb.mime_renderers".json_mime = "myst_nb_json_render_plugin:MimeRenderPlugin"