diff --git a/README.md b/README.md
index 0458edc9..1b770920 100644
--- a/README.md
+++ b/README.md
@@ -117,6 +117,7 @@ These options can be configured by setting environment variables using `-e KEY="
 | `WG_POST_DOWN` | `...` | `iptables ...` | See [config.js](https://github.com/wg-easy/wg-easy/blob/master/src/config.js#L28) for the default value. |
 | `LANG` | `en` | `de` | Web UI language (Supports: en, ua, ru, tr, no, pl, fr, de, ca, es, ko, vi, nl, is, pt, chs, cht, it, th, hi). |
 | `UI_TRAFFIC_STATS` | `false` | `true` | Enable detailed RX / TX client stats in Web UI |
+| `UI_CHART_TYPE` | `0` | `1` | UI_CHART_TYPE=0 # Charts disabled, UI_CHART_TYPE=1 # Line chart, UI_CHART_TYPE=2 # Area chart, UI_CHART_TYPE=3 # Bar chart |
 
 > If you change `WG_PORT`, make sure to also change the exposed port.