diff --git a/linnstrument-firmware.ino b/linnstrument-firmware.ino
index 98d0ef63..77210d4e 100644
--- a/linnstrument-firmware.ino
+++ b/linnstrument-firmware.ino
@@ -57,7 +57,7 @@ For any questions about this, contact Roger Linn Design at support@rogerlinndesi
 /******************************************** CONSTANTS ******************************************/
 
 const char* OSVersion = "222.";
-const char* OSVersionBuild = ".055";
+const char* OSVersionBuild = ".K02";
 
 // SPI addresses
 #define SPI_LEDS    10               // Arduino pin for LED control over SPI