diff --git a/README.md b/README.md
index b940daf..140292a 100644
--- a/README.md
+++ b/README.md
@@ -700,6 +700,7 @@ Work in progress crates. Help the authors make these crates awesome!
 
 ## Firmware projects
 - [anne-key](https://github.com/ah-/anne-key): Alternate keyboard firmware for the Obins ANNE Pro
+- [e.ziclean cube vacuum cleaner](https://github.com/geomatsi/e.ziclean-cube): Experiments with open firmware for e.ziclean cube vacuum cleaner
 
 ## License