diff --git a/Grbl_Esp32/src/Grbl.h b/Grbl_Esp32/src/Grbl.h
index 46614405..82a85a84 100644
--- a/Grbl_Esp32/src/Grbl.h
+++ b/Grbl_Esp32/src/Grbl.h
@@ -22,6 +22,7 @@
 
 // Grbl versioning system
 
+const char* const GRBL_VERSION       = "1.3a";
 const char* const GRBL_VERSION_BUILD = "20210213";
 
 //#include <sdkconfig.h>