diff --git a/platformio_core_defs.ini b/platformio_core_defs.ini
index bedee8a98d..fbb7603269 100644
--- a/platformio_core_defs.ini
+++ b/platformio_core_defs.ini
@@ -136,7 +136,8 @@ build_flags               = ${esp82xx_2_6_x.build_flags}
                             -Wno-deprecated-declarations
 platform_packages = 
     platformio/framework-arduinoespressif8266 @ https://github.com/esp8266/Arduino.git
-    platformio/toolchain-xtensa @ ~2.100300.210717
+    mcspr/toolchain-xtensa @ ~5.100300.211127
+
 
 ; Updated ESP-IDF to the latest stable 4.0.1
 ; See: https://github.com/platformio/platform-espressif32/releases