diff --git a/.test/esphome_advanced_climate_heat_customizations.yaml b/.test/esphome_advanced_climate_heat_customizations.yaml
index 775b167..3a17847 100644
--- a/.test/esphome_advanced_climate_heat_customizations.yaml
+++ b/.test/esphome_advanced_climate_heat_customizations.yaml
@@ -100,8 +100,10 @@ esp32:
 esphome:
   # change OTA password, remove after flashing
   on_boot:
-    - lambda: |-
-        id(my_ota).set_auth_password("New password");
+    - priority: 601.0
+      then:
+        - lambda: |-
+            id(my_ota).set_auth_password("New password");
   # Limit the amount of resources used for compiling
   compile_process_limit: 1
 
@@ -243,11 +245,6 @@ time:
               mode: auto
               target_temperature: 18°C
 
-uart:
-  # Set Nextion comms baud rate to 921600 bps
-  - id: !extend tf_uart
-    baud_rate: 9600
-
 web_server:
   # Custom web server credentials
   auth:
diff --git a/docs/customization.md b/docs/customization.md
index 839e366..6b5343d 100644
--- a/docs/customization.md
+++ b/docs/customization.md
@@ -111,8 +111,10 @@ First, you need to change the default password using this code.
 # change OTA password, remove after flashing
 esphome:
   on_boot:
-    - lambda: |-
-        id(my_ota).set_auth_password("New password");
+    - priority: 601.0
+      then:
+        - lambda: |-
+            id(my_ota).set_auth_password("New password");
 ota:
   password: !secret wifi_password
   id: my_ota