diff --git a/platform.json b/platform.json
index de45d91..d79dc00 100644
--- a/platform.json
+++ b/platform.json
@@ -17,7 +17,7 @@
     "type": "git",
     "url": "https://github.com/platformio/platform-espressif8266.git"
   },
-  "version": "3.3.0",
+  "version": "4.0.0",
   "frameworks": {
     "arduino": {
       "package": "framework-arduinoespressif8266",