Update runtime files
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 0bfb1a9..5a19fb9 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -169,6 +169,7 @@
 runtime/plugin/zipPlugin.vim		@cecamp
 runtime/syntax/aidl.vim			@dpelle
 runtime/syntax/amiga.vim		@cecamp
+runtime/syntax/arduino.vim		@johshoff
 runtime/syntax/asm.vim			@dkearns
 runtime/syntax/asmh8300.vim		@dkearns
 runtime/syntax/asterisk.vim		@jaunis