diff --git a/registry.txt b/registry.txt
index 193c5bda..77a1f678 100644
--- a/registry.txt
+++ b/registry.txt
@@ -4348,3 +4348,4 @@ https://github.com/winner10920/ESPSerialFlasher.git|Contributed|ESPSerialFlasher
 https://github.com/Frederik-Eberhard/Excelsior.git|Contributed|Excelsior
 https://github.com/khoih-prog/ESP32_PWM.git|Contributed|ESP32_PWM
 https://gitlab.com/tamctec/ft62x6-arduino.git|Contributed|TAMC_FT62X6
+https://github.com/Phoenix1747/MQ135.git|Contributed|MQ135