diff --git a/esphome/esp-underhouselights.yaml b/esphome/esp-underhouselights.yaml
index eebe907..d37e342 100644
--- a/esphome/esp-underhouselights.yaml
+++ b/esphome/esp-underhouselights.yaml
@@ -6,6 +6,7 @@
 # https://home.fox.co.nz/gitea/zorruno/zorruno-homeassistant/src/branch/master/esphome/esp-underhouselights.yaml
 #:########################################################################################:#
 # VERSIONS:
+# V1.2 2026-07-25 Standardized MQTT payloads: "ON"/"OFF" → "On"/"Off"
 # V1.1 2026-02-25 Updated yaml to zorruno layout V1.1
 # V1.0 2025-06-18 Initial Version
 #:########################################################################################:#
@@ -59,7 +60,7 @@ substitutions:
 
   # Project Naming
   project_name: "Sonoff Technologies.Sonoff 4Ch R2" # Project Details
-  project_version: "v1.1"  # Project V denotes release of yaml file, allowing checking of deployed vs latest version
+  project_version: "v1.2"  # Project V denotes release of yaml file, allowing checking of deployed vs latest version
 
   # Passwords
   api_key: !secret esp-api_key # unfortunately you can't use substitutions inside secrets names