diff --git a/README.md b/README.md
index 2095990..23e0084 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,7 @@ Custom extensions for Pi Coding Agent are in [`extensions`](extensions):
 Custom themes are in [`themes`](themes):
 
 * [`nightowl.json`](themes/nightowl.json) - Night Owl-inspired theme.
+* [`modern-dark.json`](themes/modern-dark.json) - A modern dark theme.
 
 ## Distributions