diff --git a/platformio.ini b/platformio.ini
index 5074ee432..b63a1e41d 100755
--- a/platformio.ini
+++ b/platformio.ini
@@ -113,7 +113,7 @@ build_flags               = ${tasmota_core.build_flags}
 
 [tasmota_core]
 ; *** Esp8266 Arduino core 2.7.0
-platform                  = espressif8266@2.4.0
+platform                  = espressif8266@2.5.0
 platform_packages         = framework-arduinoespressif8266 @ https://github.com/tasmota/Arduino/releases/download/2.7.0/esp8266-2.7.0.zip
 build_flags               = ${esp82xx_defaults.build_flags}
                             -DBEARSSL_SSL_BASIC
diff --git a/platformio_override_sample.ini b/platformio_override_sample.ini
index afd1e6a4b..22bd8cf70 100644
--- a/platformio_override_sample.ini
+++ b/platformio_override_sample.ini
@@ -83,7 +83,7 @@ extra_scripts             = ${scripts_defaults.extra_scripts}
 
 [tasmota_stage]
 ; *** Esp8266 core for Arduino version Tasmota stage
-platform                  = espressif8266@2.4.0
+platform                  = espressif8266@2.5.0
 platform_packages         = framework-arduinoespressif8266 @ https://github.com/esp8266/Arduino.git#36e047e908cfa6eafaaf824988070b49f2c2ff2a
 build_flags               = ${esp82xx_defaults.build_flags}
                             -DBEARSSL_SSL_BASIC
@@ -127,7 +127,7 @@ build_flags               = ${esp82xx_defaults.build_flags}
 
 [core_stage]
 ; *** Esp8266 core for Arduino version latest development version
-platform                  = espressif8266@2.4.0
+platform                  = espressif8266@2.5.0
 platform_packages         = framework-arduinoespressif8266 @ https://github.com/esp8266/Arduino.git
 build_flags               = ${esp82xx_defaults.build_flags}
                             -DBEARSSL_SSL_BASIC