Bump version.
diff --git a/src/nn.h b/src/nn.h
index f9069ea..b08096e 100644
--- a/src/nn.h
+++ b/src/nn.h
@@ -2,7 +2,7 @@
Copyright (c) 2012-2014 Martin Sustrik All rights reserved.
Copyright (c) 2013 GoPivotal, Inc. All rights reserved.
Copyright (c) 2015-2016 Jack R. Dunaway. All rights reserved.
- Copyright 2017 Garrett D'Amore <garrett@damore.org>
+ Copyright 2022 Staysail Systems, Inc. <info@staysail.tech>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"),
@@ -57,13 +57,13 @@
/* www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html */
/* The current interface version. */
-#define NN_VERSION_CURRENT 5
+#define NN_VERSION_CURRENT 6
/* The latest revision of the current interface. */
-#define NN_VERSION_REVISION 1
+#define NN_VERSION_REVISION 0
/* How many past interface versions are still supported. */
-#define NN_VERSION_AGE 0
+#define NN_VERSION_AGE 1
/******************************************************************************/
/* Errors. */
