Bump API revision.
diff --git a/src/nn.h b/src/nn.h
index ce5efe3..f9069ea 100644
--- a/src/nn.h
+++ b/src/nn.h
@@ -1,8 +1,8 @@
 /*
     Copyright (c) 2012-2014 Martin Sustrik  All rights reserved.
     Copyright (c) 2013 GoPivotal, Inc.  All rights reserved.
-    Copyright 2016 Garrett D'Amore <garrett@damore.org>
     Copyright (c) 2015-2016 Jack R. Dunaway.  All rights reserved.
+    Copyright 2017 Garrett D'Amore <garrett@damore.org>
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"),
@@ -60,7 +60,7 @@
 #define NN_VERSION_CURRENT 5
 
 /*  The latest revision of the current interface. */
-#define NN_VERSION_REVISION 0
+#define NN_VERSION_REVISION 1
 
 /*  How many past interface versions are still supported. */
 #define NN_VERSION_AGE 0