diff --git a/README.md b/README.md
index fd0663a..967ade1 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,7 @@ GPS/GNSS                     | ✔¹     | 🅧     | ◌¹        | 🅧   | 
 - ... other modules, based on supported modems. Some boards require [**special configuration**](https://github.com/vshymanskyy/TinyGSM/wiki/Board-configuration).
 
 More modems may be supported later:
-- [ ] Quectel M10, M35, M95, UG95
+- [ ] Quectel M10, M35, M95, UG95, EC21
 - [ ] Sequans Monarch LTE Cat M1/NB1
 - [ ] SIMCom SIM5320, SIM5360, SIM5216, SIM7xxx
 - [ ] Telit GL865