diff --git a/guides/diy.rst b/guides/diy.rst
index c1d66a0c4..b4e894939 100644
--- a/guides/diy.rst
+++ b/guides/diy.rst
@@ -69,6 +69,7 @@ Custom Components & Code
 - `Paradox alarm system sensors custom component <https://github.com/Margriko/Paradox-ESPHome>`__ by :ghuser:`Margriko`
 - `DSC POWER832 (PC5010) alarm system custom component <https://github.com/Dilbert66/esphome-dsckeybus>`__ by :ghuser:`Dilbert66`
 - `ADEMCO/VISTA/Honeywell alarm system custom component <https://github.com/Dilbert66/esphome-vistaECP>`__ by :ghuser:`Dilbert66`
+- `Winsen ZE08-CH2O (Formaldehyde sensor) custom component <https://gist.github.com/cretep/f96606dc6a4eae0d85993d6085959220>`__ by :ghuser:`cretep`
 
 Sample Configurations
 ---------------------