diff --git a/include/superfemto.h b/include/superfemto.h
index c14fe6c..45b06d9 100644
--- a/include/superfemto.h
+++ b/include/superfemto.h
@@ -13,7 +13,7 @@
 #include "gsml1const.h"
 
 #define SUPERFEMTO_API(x,y,z)    ((x << 16) | (y << 8) | z)
-#define SUPERFEMTO_API_VERSION   SUPERFEMTO_API(3,0,1)
+#define SUPERFEMTO_API_VERSION   SUPERFEMTO_API(3,1,0)
 
 /****************************************************************************
  *                                   Const                                  *