diff --git a/boards/emlid/navio2/arm64.px4board b/boards/emlid/navio2/arm64.px4board
new file mode 100644
index 000000000000..0632b66fcff3
--- /dev/null
+++ b/boards/emlid/navio2/arm64.px4board
@@ -0,0 +1,5 @@
+# To support 64-bit OS on Raspberry Pi 4,5
+# sudo apt install g++-aarch64-linux-gnu
+# use "make emlid_navio2_arm64 upload"
+
+CONFIG_BOARD_TOOLCHAIN="aarch64-linux-gnu"