diff --git a/README.md b/README.md
index 2dd63fb..9aee49c 100644
--- a/README.md
+++ b/README.md
@@ -36,3 +36,6 @@ I recommend [this](https://www.thingiverse.com/thing:3821633) case from Thingive
 
 ## Used Libraries
 + [ESP8266-oled-ssd1306 by ThingPulse](https://github.com/ThingPulse/esp8266-oled-ssd1306)
+
+## To do
+- [ ] [Sparklines](https://github.com/0xPIT/ESParklines)