diff --git a/minimal_heap.h b/minimal_heap.h
index 1a194d6..d83a04a 100644
--- a/minimal_heap.h
+++ b/minimal_heap.h
@@ -1,4 +1,4 @@
-/* Version 1.3 */
+/* Version 1.3b */
 
 #ifndef __MINIMAL_HEAP_H__
 #define __MINIMAL_HEAP_H__