diff --git a/IODevice.h b/IODevice.h
index ce47267..bccf39b 100644
--- a/IODevice.h
+++ b/IODevice.h
@@ -408,5 +408,6 @@ private:
 #include "IO_MCP23008.h"
 #include "IO_MCP23017.h"
 #include "IO_PCF8574.h"
+#include "IO_DNOU8.h"
 
 #endif // iodevice_h