diff --git a/esphome/esp-datacupboardfans.yaml b/esphome/esp-datacupboardfans.yaml
index 153086e..395b8d6 100644
--- a/esphome/esp-datacupboardfans.yaml
+++ b/esphome/esp-datacupboardfans.yaml
@@ -6,6 +6,7 @@
 # https://home.fox.co.nz/gitea/zorruno/zorruno-homeassistant/src/branch/master/esphome/esp-datacupboardfans.yaml
 #:########################################################################################:#
 # VERSIONS:
+# V1.4 2026-07-25 Standardized MQTT payloads: "ON"/"OFF" → "On"/"Off"
 # V1.3 2026-02-20 Remove invalid allow_other_uses on pulse_counter pins (ESPHome 2026.2.x)
 # V1.2 2026-02-20 Use common SNTP package, and publish fan fault/status via interval script
 # V1.1 2026-02-20 Fix template binary_sensor update method for ESPHome 2026.2.x
@@ -52,7 +53,7 @@ substitutions:
 
   # Project Naming
   project_name: "Yunshan.HW-622 ESP8266MOD Relay Board"
-  project_version: "v1.3"
+  project_version: "v1.4"
 
   # Passwords and Secrets (Unfortunately, you cannot use substitutions inside secret names)
   api_key: !secret esp-api_key