diff --git a/mcu-rf433.yaml b/mcu-rf433.yaml
index 783c1c6..d06208f 100644
--- a/mcu-rf433.yaml
+++ b/mcu-rf433.yaml
@@ -6,7 +6,8 @@ substitutions:
 esphome:
   name: mcu-${device}
   comment: ${comment}
-  platform: ESP8266
+
+esp8266:
   board: esp01_1m
 
 packages:
diff --git a/mcu-socket-01.yaml b/mcu-socket-01.yaml
index 1f7d87e..e1650c1 100644
--- a/mcu-socket-01.yaml
+++ b/mcu-socket-01.yaml
@@ -9,7 +9,8 @@ substitutions:
 esphome:
   name: mcu-${device}
   comment: ${comment}
-  platform: ESP8266
+
+esp8266:
   board: esp01_1m
 
 packages:
diff --git a/mcu-socket-02.yaml b/mcu-socket-02.yaml
index 9204524..3f4dcf3 100644
--- a/mcu-socket-02.yaml
+++ b/mcu-socket-02.yaml
@@ -9,7 +9,8 @@ substitutions:
 esphome:
   name: mcu-${device}
   comment: ${comment}
-  platform: ESP8266
+
+esp8266:
   board: esp01_1m
 
 packages:
diff --git a/mcu-socket-03.yaml b/mcu-socket-03.yaml
index f2d9055..1327de7 100644
--- a/mcu-socket-03.yaml
+++ b/mcu-socket-03.yaml
@@ -16,7 +16,8 @@ substitutions:
 esphome:
   name: mcu-${device}
   comment: ${comment}
-  platform: ESP8266
+
+esp8266:
   board: esp01_1m
 
 packages:
diff --git a/mcu-waterproof-socket.yaml b/mcu-waterproof-socket.yaml
index 6014ac4..a5b5016 100644
--- a/mcu-waterproof-socket.yaml
+++ b/mcu-waterproof-socket.yaml
@@ -6,7 +6,8 @@ substitutions:
 esphome:
   name: mcu-${device}
   comment: ${comment}
-  platform: ESP8266
+
+esp8266:
   board: esp01_1m
 
 packages: