diff --git a/Grbl_Esp32/src/Grbl.h b/Grbl_Esp32/src/Grbl.h
index 4fef75ad..e17bbfff 100644
--- a/Grbl_Esp32/src/Grbl.h
+++ b/Grbl_Esp32/src/Grbl.h
@@ -21,6 +21,7 @@
 */
 
 // Grbl versioning system
+const char* const GRBL_VERSION       = "1.3a";
 const char* const GRBL_VERSION_BUILD = "20210311";
 
 //#include <sdkconfig.h>