diff --git a/platformio.ini b/platformio.ini
index ce6a7586b..e42a24032 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -32,8 +32,8 @@ upload_port     =
 monitor_port    =
 build_type      = release
 upload_speed    = 1500000
-build_flags     = -std=gnu++17
-                  -Dregister=                       ; Sinister: redefine 'register' so FastLED can use that keyword under C++17
+build_flags     = -std=gnu++2a
+                  -Dregister=                       ; Sinister: redefine 'register' so FastLED can use that keyword under C++17 and later
                   -g3
                   -Os
                   -ffunction-sections