diff --git a/README-tmpl.md b/README-tmpl.md
index 2cdd6a2..8085a18 100644
--- a/README-tmpl.md
+++ b/README-tmpl.md
@@ -99,6 +99,7 @@ The [examples](https://github.com/ggerganov/ggwave/blob/master/examples/) folder
 | [waver](https://github.com/ggerganov/ggwave/blob/master/examples/waver) | GUI application for sending/receiving data through sound | SDL |
 | [ggwave-py](https://github.com/ggerganov/ggwave/blob/master/examples/ggwave-py) | Python examples | PortAudio |
 | [ggwave-js](https://github.com/ggerganov/ggwave/blob/master/examples/ggwave-js) | Javascript example | Web Audio API |
+| [spectrogram](https://github.com/ggerganov/ggwave/blob/master/examples/spectrogram) | Spectrogram tool | SDL |
 
 Other projects using **ggwave** or one of its prototypes: