diff --git a/main.cc b/main.cc
index 524f7a5..09bd163 100644
--- a/main.cc
+++ b/main.cc
@@ -37,7 +37,7 @@
 #include "transfer_function.hh"
 
 #define THE_CODE_NAME "music!"
-#define THE_CODE_VERSION "1.5"
+#define THE_CODE_VERSION "1.51"
 
 
 namespace music