diff --git a/platformio.ini b/platformio.ini
index 010d464d..a71655fd 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -162,6 +162,7 @@ lib_deps =
 	${common_env_data.lib_deps_external}
 	${env:esp32_4mb_fromitems.lib_deps}
 build_flags = -Desp32_4mb="esp32_4mb"
+	-std=c++17
 framework = arduino
 board = esp32dev
 platform = espressif32 @5.1.1
@@ -185,6 +186,7 @@ build_flags =
 	-Desp32s2_4mb="esp32s2_4mb"
 	-DARDUINO_USB_CDC_ON_BOOT=1
 	-DARDUINO_USB_MODE=0
+	-std=c++17
 framework = arduino
 board = lolin_s2_mini
 platform = espressif32 @6.3.1