diff --git a/builder/frameworks/arduino.py b/builder/frameworks/arduino.py
index 85fb8b2..8609725 100644
--- a/builder/frameworks/arduino.py
+++ b/builder/frameworks/arduino.py
@@ -117,7 +117,7 @@ def load_flags(filename):
         ("ARDUINO", 10810),
         "ARDUINO_ARCH_RENESAS",
         "ARDUINO_FSP",
-        "_XOPEN_SOURCE",
+        ("_XOPEN_SOURCE", 700),
         ("F_CPU", "$BOARD_F_CPU")
     ],
 
diff --git a/platform.json b/platform.json
index cf3ed67..fb9649a 100644
--- a/platform.json
+++ b/platform.json
@@ -46,13 +46,13 @@
       "type": "framework",
       "optional": true,
       "owner": "platformio",
-      "version": "~1.0.2"
+      "version": "~1.0.4"
     },
     "framework-arduinorenesas-portenta": {
       "type": "framework",
       "optional": true,
       "owner": "platformio",
-      "version": "~1.0.2"
+      "version": "~1.0.4"
     },
     "framework-renesas-fsp": {
       "type": "framework",