diff --git a/setup.cfg b/setup.cfg
index 24b6fc5..bc14073 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -18,6 +18,7 @@ classifiers =
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
     Programming Language :: Python :: Implementation :: CPython
 project_urls =
     Tracker = https://github.com/ianhi/mpl-image-labeller/issues